notebooks/zbLink_mathplotlib.ipynb

{
 "cells": [
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "### jupyter zbMATH Links API demo\n",
    "\n",
    "This notebooks demonstrates some of the capabilites of the zbMATH links API."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 5,
   "metadata": {},
   "outputs": [],
   "source": [
    "import pandas as pd\n",
    "import matplotlib\n",
    "matplotlib.rcParams['figure.figsize'] = (20, 10)"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Load statics for msc distribtion."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/html": [
       "<div>\n",
       "<style scoped>\n",
       "    .dataframe tbody tr th:only-of-type {\n",
       "        vertical-align: middle;\n",
       "    }\n",
       "\n",
       "    .dataframe tbody tr th {\n",
       "        vertical-align: top;\n",
       "    }\n",
       "\n",
       "    .dataframe thead th {\n",
       "        text-align: right;\n",
       "    }\n",
       "</style>\n",
       "<table border=\"1\" class=\"dataframe\">\n",
       "  <thead>\n",
       "    <tr style=\"text-align: right;\">\n",
       "      <th></th>\n",
       "      <th>count</th>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>msc</th>\n",
       "      <th></th>\n",
       "    </tr>\n",
       "  </thead>\n",
       "  <tbody>\n",
       "    <tr>\n",
       "      <th>33</th>\n",
       "      <td>491</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>65</th>\n",
       "      <td>351</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>11</th>\n",
       "      <td>172</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>34</th>\n",
       "      <td>169</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>41</th>\n",
       "      <td>74</td>\n",
       "    </tr>\n",
       "  </tbody>\n",
       "</table>\n",
       "</div>"
      ],
      "text/plain": [
       "     count\n",
       "msc       \n",
       "33     491\n",
       "65     351\n",
       "11     172\n",
       "34     169\n",
       "41      74"
      ]
     },
     "execution_count": 2,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "msc = pd.read_json('https://zblink.formulasearchengine.com/links_api/statistics/msc/')\n",
    "msc = msc.rename(columns={msc.columns[0]:'msc',msc.columns[1]:'count'})\n",
    "msc = msc.set_index('msc')\n",
    "msc.head()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 6,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "<AxesSubplot:xlabel='msc'>"
      ]
     },
     "execution_count": 6,
     "metadata": {},
     "output_type": "execute_result"
    },
    {
     "data": {
      "image/png": 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\n",
      "text/plain": [
       "<Figure size 1440x720 with 1 Axes>"
      ]
     },
     "metadata": {
      "needs_background": "light"
     },
     "output_type": "display_data"
    }
   ],
   "source": [
    "msc.plot(y='count',kind='bar')"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "In the same way one can derive the year distribution"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 7,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/html": [
       "<div>\n",
       "<style scoped>\n",
       "    .dataframe tbody tr th:only-of-type {\n",
       "        vertical-align: middle;\n",
       "    }\n",
       "\n",
       "    .dataframe tbody tr th {\n",
       "        vertical-align: top;\n",
       "    }\n",
       "\n",
       "    .dataframe thead th {\n",
       "        text-align: right;\n",
       "    }\n",
       "</style>\n",
       "<table border=\"1\" class=\"dataframe\">\n",
       "  <thead>\n",
       "    <tr style=\"text-align: right;\">\n",
       "      <th></th>\n",
       "      <th>count</th>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>year</th>\n",
       "      <th></th>\n",
       "    </tr>\n",
       "  </thead>\n",
       "  <tbody>\n",
       "    <tr>\n",
       "      <th>1998</th>\n",
       "      <td>67</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>1999</th>\n",
       "      <td>65</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>1995</th>\n",
       "      <td>65</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>1992</th>\n",
       "      <td>58</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>1994</th>\n",
       "      <td>58</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>...</th>\n",
       "      <td>...</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>1938</th>\n",
       "      <td>2</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>1931</th>\n",
       "      <td>2</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>1943</th>\n",
       "      <td>1</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>1936</th>\n",
       "      <td>1</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>2017</th>\n",
       "      <td>1</td>\n",
       "    </tr>\n",
       "  </tbody>\n",
       "</table>\n",
       "<p>87 rows × 1 columns</p>\n",
       "</div>"
      ],
      "text/plain": [
       "      count\n",
       "year       \n",
       "1998     67\n",
       "1999     65\n",
       "1995     65\n",
       "1992     58\n",
       "1994     58\n",
       "...     ...\n",
       "1938      2\n",
       "1931      2\n",
       "1943      1\n",
       "1936      1\n",
       "2017      1\n",
       "\n",
       "[87 rows x 1 columns]"
      ]
     },
     "execution_count": 7,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "y = pd.read_json('https://zblink.formulasearchengine.com/links_api/statistics/years/')\n",
    "y = y.rename(columns={y.columns[0]:'year',y.columns[1]:'count'})\n",
    "y = y.set_index('year')\n",
    "y"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 8,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "<AxesSubplot:xlabel='year'>"
      ]
     },
     "execution_count": 8,
     "metadata": {},
     "output_type": "execute_result"
    },
    {
     "data": {
      "image/png": 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\n",
      "text/plain": [
       "<Figure size 1440x720 with 1 Axes>"
      ]
     },
     "metadata": {
      "needs_background": "light"
     },
     "output_type": "display_data"
    }
   ],
   "source": [
    "y.plot(kind='bar',y='count')"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Instead of the preprocessed statistics one can also access the uderling data in the scholix format. In the example below we filter for links that point to a MSC class 14."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 9,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/html": [
       "<div>\n",
       "<style scoped>\n",
       "    .dataframe tbody tr th:only-of-type {\n",
       "        vertical-align: middle;\n",
       "    }\n",
       "\n",
       "    .dataframe tbody tr th {\n",
       "        vertical-align: top;\n",
       "    }\n",
       "\n",
       "    .dataframe thead th {\n",
       "        text-align: right;\n",
       "    }\n",
       "</style>\n",
       "<table border=\"1\" class=\"dataframe\">\n",
       "  <thead>\n",
       "    <tr style=\"text-align: right;\">\n",
       "      <th></th>\n",
       "      <th>LinkPublicationDate</th>\n",
       "      <th>RelationshipType</th>\n",
       "      <th>Source.Identifier.ID</th>\n",
       "      <th>Source.Identifier.IDScheme</th>\n",
       "      <th>Source.Identifier.IDURL</th>\n",
       "      <th>Source.Type</th>\n",
       "      <th>Source.Title</th>\n",
       "      <th>Source.Publisher.Name</th>\n",
       "      <th>Source.Publisher.Identifier.ID</th>\n",
       "      <th>Source.Publisher.Identifier.IDScheme</th>\n",
       "      <th>...</th>\n",
       "      <th>Target.Type.Name</th>\n",
       "      <th>Target.Type.Subtype</th>\n",
       "      <th>Target.Title</th>\n",
       "      <th>Target.Creator</th>\n",
       "      <th>Target.PublicationDate</th>\n",
       "      <th>Target.Publisher</th>\n",
       "      <th>LinkProvider.provider_name</th>\n",
       "      <th>LinkProvider.identifier.ID</th>\n",
       "      <th>LinkProvider.identifier.IDScheme</th>\n",
       "      <th>LinkProvider.identifier.IDURL</th>\n",
       "    </tr>\n",
       "  </thead>\n",
       "  <tbody>\n",
       "    <tr>\n",
       "      <th>0</th>\n",
       "      <td>1900-01-01T00:00:00</td>\n",
       "      <td>none</td>\n",
       "      <td>17.13#info</td>\n",
       "      <td>DLMF scheme</td>\n",
       "      <td>https://dlmf.nist.gov/17.13#info</td>\n",
       "      <td>{'Name': 'DLMF bibliographic entry'}</td>\n",
       "      <td>§17.13 Integrals ‣ Properties ‣ Chapter 17 q -...</td>\n",
       "      <td>DLMF</td>\n",
       "      <td>DLMF</td>\n",
       "      <td>name of partner</td>\n",
       "      <td>...</td>\n",
       "      <td>book</td>\n",
       "      <td>11-02 11-03 11F03 33-02 14K25 11F11 11F20 11F2...</td>\n",
       "      <td>Ramanujan's notebooks. Part III</td>\n",
       "      <td>[{'Name': 'Berndt, Bruce C.'}]</td>\n",
       "      <td>1991</td>\n",
       "      <td>New York etc.: Springer-Verlag. 510 p. DM 148....</td>\n",
       "      <td>zbMATH</td>\n",
       "      <td>zbMATH</td>\n",
       "      <td>zbMATH scheme</td>\n",
       "      <td>https://zbmath.org/</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>1</th>\n",
       "      <td>1900-01-01T00:00:00</td>\n",
       "      <td>none</td>\n",
       "      <td>20.9#ii.info</td>\n",
       "      <td>DLMF scheme</td>\n",
       "      <td>https://dlmf.nist.gov/20.9#ii.info</td>\n",
       "      <td>{'Name': 'DLMF bibliographic entry'}</td>\n",
       "      <td>§20.9(ii) Elliptic Functions and Modular Funct...</td>\n",
       "      <td>DLMF</td>\n",
       "      <td>DLMF</td>\n",
       "      <td>name of partner</td>\n",
       "      <td>...</td>\n",
       "      <td>book</td>\n",
       "      <td>11-02 11G05 14H52 33E05 11-01 14-01 11R11 11R2...</td>\n",
       "      <td>Elliptic curves. Function theory, geometry, ar...</td>\n",
       "      <td>[{'Name': 'McKean, Henry'}, {'Name': 'Moll, Vi...</td>\n",
       "      <td>1999</td>\n",
       "      <td>Cambridge: Cambridge University Press. xiii, 2...</td>\n",
       "      <td>zbMATH</td>\n",
       "      <td>zbMATH</td>\n",
       "      <td>zbMATH scheme</td>\n",
       "      <td>https://zbmath.org/</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>2</th>\n",
       "      <td>1900-01-01T00:00:00</td>\n",
       "      <td>none</td>\n",
       "      <td>23#info</td>\n",
       "      <td>DLMF scheme</td>\n",
       "      <td>https://dlmf.nist.gov/23#info</td>\n",
       "      <td>{'Name': 'DLMF bibliographic entry'}</td>\n",
       "      <td>Chapter 23 Weierstrass Elliptic and Modular Fu...</td>\n",
       "      <td>DLMF</td>\n",
       "      <td>DLMF</td>\n",
       "      <td>name of partner</td>\n",
       "      <td>...</td>\n",
       "      <td>book</td>\n",
       "      <td>14-02 33-02 14K25 33E05 11E25 14-01 33-01 14K2...</td>\n",
       "      <td>Elliptic functions</td>\n",
       "      <td>[{'Name': 'Armitage, J. V.'}, {'Name': 'Eberle...</td>\n",
       "      <td>2006</td>\n",
       "      <td>London Mathematical Society Student Texts 67. ...</td>\n",
       "      <td>zbMATH</td>\n",
       "      <td>zbMATH</td>\n",
       "      <td>zbMATH scheme</td>\n",
       "      <td>https://zbmath.org/</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>3</th>\n",
       "      <td>1900-01-01T00:00:00</td>\n",
       "      <td>none</td>\n",
       "      <td>21.1#p5</td>\n",
       "      <td>DLMF scheme</td>\n",
       "      <td>https://dlmf.nist.gov/21.1#p5</td>\n",
       "      <td>{'Name': 'DLMF bibliographic entry'}</td>\n",
       "      <td>§21.1 Special Notation ‣ Notation ‣ Chapter 21...</td>\n",
       "      <td>DLMF</td>\n",
       "      <td>DLMF</td>\n",
       "      <td>name of partner</td>\n",
       "      <td>...</td>\n",
       "      <td>serial_article</td>\n",
       "      <td>58J99 35Q99 35C99 35B99 14H52 14H40 53C22 30F99</td>\n",
       "      <td>Theta-functions and non-linear equations</td>\n",
       "      <td>[{'Name': 'Dubrovin, B. A.'}]</td>\n",
       "      <td>1981</td>\n",
       "      <td>Usp. Mat. Nauk 36, No. 2(218), 11-80 (1981).</td>\n",
       "      <td>zbMATH</td>\n",
       "      <td>zbMATH</td>\n",
       "      <td>zbMATH scheme</td>\n",
       "      <td>https://zbmath.org/</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>4</th>\n",
       "      <td>1900-01-01T00:00:00</td>\n",
       "      <td>none</td>\n",
       "      <td>22.18#ii.p1</td>\n",
       "      <td>DLMF scheme</td>\n",
       "      <td>https://dlmf.nist.gov/22.18#ii.p1</td>\n",
       "      <td>{'Name': 'DLMF bibliographic entry'}</td>\n",
       "      <td>§22.18(ii) Conformal Mapping ‣ §22.18 Mathemat...</td>\n",
       "      <td>DLMF</td>\n",
       "      <td>DLMF</td>\n",
       "      <td>name of partner</td>\n",
       "      <td>...</td>\n",
       "      <td>book</td>\n",
       "      <td>11-02 11G05 14H52 33E05 11-01 14-01 11R11 11R2...</td>\n",
       "      <td>Elliptic curves. Function theory, geometry, ar...</td>\n",
       "      <td>[{'Name': 'McKean, Henry'}, {'Name': 'Moll, Vi...</td>\n",
       "      <td>1999</td>\n",
       "      <td>Cambridge: Cambridge University Press. xiii, 2...</td>\n",
       "      <td>zbMATH</td>\n",
       "      <td>zbMATH</td>\n",
       "      <td>zbMATH scheme</td>\n",
       "      <td>https://zbmath.org/</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>...</th>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "      <td>...</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>111</th>\n",
       "      <td>1900-01-01T00:00:00</td>\n",
       "      <td>none</td>\n",
       "      <td>32.10#ii.info</td>\n",
       "      <td>DLMF scheme</td>\n",
       "      <td>https://dlmf.nist.gov/32.10#ii.info</td>\n",
       "      <td>{'Name': 'DLMF bibliographic entry'}</td>\n",
       "      <td>§32.10(ii) Second Painlevé Equation ‣ §32.10 S...</td>\n",
       "      <td>DLMF</td>\n",
       "      <td>DLMF</td>\n",
       "      <td>name of partner</td>\n",
       "      <td>...</td>\n",
       "      <td>serial_article</td>\n",
       "      <td>37J99 14E05</td>\n",
       "      <td>Studies on the Painlevé equations. III: Second...</td>\n",
       "      <td>[{'Name': 'Okamoto, Kazuo'}]</td>\n",
       "      <td>1986</td>\n",
       "      <td>Math. Ann. 275, 221-255 (1986).</td>\n",
       "      <td>zbMATH</td>\n",
       "      <td>zbMATH</td>\n",
       "      <td>zbMATH scheme</td>\n",
       "      <td>https://zbmath.org/</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>112</th>\n",
       "      <td>1900-01-01T00:00:00</td>\n",
       "      <td>none</td>\n",
       "      <td>32.2#iv.p1</td>\n",
       "      <td>DLMF scheme</td>\n",
       "      <td>https://dlmf.nist.gov/32.2#iv.p1</td>\n",
       "      <td>{'Name': 'DLMF bibliographic entry'}</td>\n",
       "      <td>§32.2(iv) Elliptic Form ‣ §32.2 Differential E...</td>\n",
       "      <td>DLMF</td>\n",
       "      <td>DLMF</td>\n",
       "      <td>name of partner</td>\n",
       "      <td>...</td>\n",
       "      <td>book_article</td>\n",
       "      <td>14H52 34M55 34M15 14N35 14K20</td>\n",
       "      <td>Sixth Painlevé equation, universal elliptic cu...</td>\n",
       "      <td>[{'Name': 'Manin, Yu. I.'}]</td>\n",
       "      <td>1998</td>\n",
       "      <td>Khovanskij, A. (ed.) et al., Geometry of diffe...</td>\n",
       "      <td>zbMATH</td>\n",
       "      <td>zbMATH</td>\n",
       "      <td>zbMATH scheme</td>\n",
       "      <td>https://zbmath.org/</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>113</th>\n",
       "      <td>1900-01-01T00:00:00</td>\n",
       "      <td>none</td>\n",
       "      <td>32.6#v.p1</td>\n",
       "      <td>DLMF scheme</td>\n",
       "      <td>https://dlmf.nist.gov/32.6#v.p1</td>\n",
       "      <td>{'Name': 'DLMF bibliographic entry'}</td>\n",
       "      <td>§32.6(v) Other Painlevé Equations ‣ §32.6 Hami...</td>\n",
       "      <td>DLMF</td>\n",
       "      <td>DLMF</td>\n",
       "      <td>name of partner</td>\n",
       "      <td>...</td>\n",
       "      <td>serial_article</td>\n",
       "      <td>37J99 14E05</td>\n",
       "      <td>Studies on the Painlevé equations. III: Second...</td>\n",
       "      <td>[{'Name': 'Okamoto, Kazuo'}]</td>\n",
       "      <td>1986</td>\n",
       "      <td>Math. Ann. 275, 221-255 (1986).</td>\n",
       "      <td>zbMATH</td>\n",
       "      <td>zbMATH</td>\n",
       "      <td>zbMATH scheme</td>\n",
       "      <td>https://zbmath.org/</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>114</th>\n",
       "      <td>1900-01-01T00:00:00</td>\n",
       "      <td>none</td>\n",
       "      <td>21#info</td>\n",
       "      <td>DLMF scheme</td>\n",
       "      <td>https://dlmf.nist.gov/21#info</td>\n",
       "      <td>{'Name': 'DLMF bibliographic entry'}</td>\n",
       "      <td>Chapter 21 Multidimensional Theta Functions</td>\n",
       "      <td>DLMF</td>\n",
       "      <td>DLMF</td>\n",
       "      <td>name of partner</td>\n",
       "      <td>...</td>\n",
       "      <td>book</td>\n",
       "      <td>11F46 14K25 32N10 32-02 11-02 14K30</td>\n",
       "      <td>Topics in complex function theory. Vol. III. A...</td>\n",
       "      <td>[{'Name': 'Siegel, C. L.'}]</td>\n",
       "      <td>1989</td>\n",
       "      <td>Wiley Classics Library. New York: John Wiley \\...</td>\n",
       "      <td>zbMATH</td>\n",
       "      <td>zbMATH</td>\n",
       "      <td>zbMATH scheme</td>\n",
       "      <td>https://zbmath.org/</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>115</th>\n",
       "      <td>1900-01-01T00:00:00</td>\n",
       "      <td>none</td>\n",
       "      <td>21.8#p1</td>\n",
       "      <td>DLMF scheme</td>\n",
       "      <td>https://dlmf.nist.gov/21.8#p1</td>\n",
       "      <td>{'Name': 'DLMF bibliographic entry'}</td>\n",
       "      <td>§21.8 Abelian Functions ‣ Applications ‣ Chapt...</td>\n",
       "      <td>DLMF</td>\n",
       "      <td>DLMF</td>\n",
       "      <td>name of partner</td>\n",
       "      <td>...</td>\n",
       "      <td>book</td>\n",
       "      <td>14K20 14H05 33E05 14-01 32N05</td>\n",
       "      <td>Introduction to the classical theory of Abelia...</td>\n",
       "      <td>[{'Name': 'Markushevich, A. I.'}]</td>\n",
       "      <td>1992</td>\n",
       "      <td>Translations of Mathematical Monographs. 96. P...</td>\n",
       "      <td>zbMATH</td>\n",
       "      <td>zbMATH</td>\n",
       "      <td>zbMATH scheme</td>\n",
       "      <td>https://zbmath.org/</td>\n",
       "    </tr>\n",
       "  </tbody>\n",
       "</table>\n",
       "<p>116 rows × 24 columns</p>\n",
       "</div>"
      ],
      "text/plain": [
       "     LinkPublicationDate RelationshipType Source.Identifier.ID  \\\n",
       "0    1900-01-01T00:00:00             none           17.13#info   \n",
       "1    1900-01-01T00:00:00             none         20.9#ii.info   \n",
       "2    1900-01-01T00:00:00             none              23#info   \n",
       "3    1900-01-01T00:00:00             none              21.1#p5   \n",
       "4    1900-01-01T00:00:00             none          22.18#ii.p1   \n",
       "..                   ...              ...                  ...   \n",
       "111  1900-01-01T00:00:00             none        32.10#ii.info   \n",
       "112  1900-01-01T00:00:00             none           32.2#iv.p1   \n",
       "113  1900-01-01T00:00:00             none            32.6#v.p1   \n",
       "114  1900-01-01T00:00:00             none              21#info   \n",
       "115  1900-01-01T00:00:00             none              21.8#p1   \n",
       "\n",
       "    Source.Identifier.IDScheme              Source.Identifier.IDURL  \\\n",
       "0                  DLMF scheme     https://dlmf.nist.gov/17.13#info   \n",
       "1                  DLMF scheme   https://dlmf.nist.gov/20.9#ii.info   \n",
       "2                  DLMF scheme        https://dlmf.nist.gov/23#info   \n",
       "3                  DLMF scheme        https://dlmf.nist.gov/21.1#p5   \n",
       "4                  DLMF scheme    https://dlmf.nist.gov/22.18#ii.p1   \n",
       "..                         ...                                  ...   \n",
       "111                DLMF scheme  https://dlmf.nist.gov/32.10#ii.info   \n",
       "112                DLMF scheme     https://dlmf.nist.gov/32.2#iv.p1   \n",
       "113                DLMF scheme      https://dlmf.nist.gov/32.6#v.p1   \n",
       "114                DLMF scheme        https://dlmf.nist.gov/21#info   \n",
       "115                DLMF scheme        https://dlmf.nist.gov/21.8#p1   \n",
       "\n",
       "                              Source.Type  \\\n",
       "0    {'Name': 'DLMF bibliographic entry'}   \n",
       "1    {'Name': 'DLMF bibliographic entry'}   \n",
       "2    {'Name': 'DLMF bibliographic entry'}   \n",
       "3    {'Name': 'DLMF bibliographic entry'}   \n",
       "4    {'Name': 'DLMF bibliographic entry'}   \n",
       "..                                    ...   \n",
       "111  {'Name': 'DLMF bibliographic entry'}   \n",
       "112  {'Name': 'DLMF bibliographic entry'}   \n",
       "113  {'Name': 'DLMF bibliographic entry'}   \n",
       "114  {'Name': 'DLMF bibliographic entry'}   \n",
       "115  {'Name': 'DLMF bibliographic entry'}   \n",
       "\n",
       "                                          Source.Title Source.Publisher.Name  \\\n",
       "0    §17.13 Integrals ‣ Properties ‣ Chapter 17 q -...                  DLMF   \n",
       "1    §20.9(ii) Elliptic Functions and Modular Funct...                  DLMF   \n",
       "2    Chapter 23 Weierstrass Elliptic and Modular Fu...                  DLMF   \n",
       "3    §21.1 Special Notation ‣ Notation ‣ Chapter 21...                  DLMF   \n",
       "4    §22.18(ii) Conformal Mapping ‣ §22.18 Mathemat...                  DLMF   \n",
       "..                                                 ...                   ...   \n",
       "111  §32.10(ii) Second Painlevé Equation ‣ §32.10 S...                  DLMF   \n",
       "112  §32.2(iv) Elliptic Form ‣ §32.2 Differential E...                  DLMF   \n",
       "113  §32.6(v) Other Painlevé Equations ‣ §32.6 Hami...                  DLMF   \n",
       "114        Chapter 21 Multidimensional Theta Functions                  DLMF   \n",
       "115  §21.8 Abelian Functions ‣ Applications ‣ Chapt...                  DLMF   \n",
       "\n",
       "    Source.Publisher.Identifier.ID Source.Publisher.Identifier.IDScheme  ...  \\\n",
       "0                             DLMF                      name of partner  ...   \n",
       "1                             DLMF                      name of partner  ...   \n",
       "2                             DLMF                      name of partner  ...   \n",
       "3                             DLMF                      name of partner  ...   \n",
       "4                             DLMF                      name of partner  ...   \n",
       "..                             ...                                  ...  ...   \n",
       "111                           DLMF                      name of partner  ...   \n",
       "112                           DLMF                      name of partner  ...   \n",
       "113                           DLMF                      name of partner  ...   \n",
       "114                           DLMF                      name of partner  ...   \n",
       "115                           DLMF                      name of partner  ...   \n",
       "\n",
       "    Target.Type.Name                                Target.Type.Subtype  \\\n",
       "0               book  11-02 11-03 11F03 33-02 14K25 11F11 11F20 11F2...   \n",
       "1               book  11-02 11G05 14H52 33E05 11-01 14-01 11R11 11R2...   \n",
       "2               book  14-02 33-02 14K25 33E05 11E25 14-01 33-01 14K2...   \n",
       "3     serial_article    58J99 35Q99 35C99 35B99 14H52 14H40 53C22 30F99   \n",
       "4               book  11-02 11G05 14H52 33E05 11-01 14-01 11R11 11R2...   \n",
       "..               ...                                                ...   \n",
       "111   serial_article                                        37J99 14E05   \n",
       "112     book_article                      14H52 34M55 34M15 14N35 14K20   \n",
       "113   serial_article                                        37J99 14E05   \n",
       "114             book                11F46 14K25 32N10 32-02 11-02 14K30   \n",
       "115             book                      14K20 14H05 33E05 14-01 32N05   \n",
       "\n",
       "                                          Target.Title  \\\n",
       "0                      Ramanujan's notebooks. Part III   \n",
       "1    Elliptic curves. Function theory, geometry, ar...   \n",
       "2                                   Elliptic functions   \n",
       "3             Theta-functions and non-linear equations   \n",
       "4    Elliptic curves. Function theory, geometry, ar...   \n",
       "..                                                 ...   \n",
       "111  Studies on the Painlevé equations. III: Second...   \n",
       "112  Sixth Painlevé equation, universal elliptic cu...   \n",
       "113  Studies on the Painlevé equations. III: Second...   \n",
       "114  Topics in complex function theory. Vol. III. A...   \n",
       "115  Introduction to the classical theory of Abelia...   \n",
       "\n",
       "                                        Target.Creator Target.PublicationDate  \\\n",
       "0                       [{'Name': 'Berndt, Bruce C.'}]                   1991   \n",
       "1    [{'Name': 'McKean, Henry'}, {'Name': 'Moll, Vi...                   1999   \n",
       "2    [{'Name': 'Armitage, J. V.'}, {'Name': 'Eberle...                   2006   \n",
       "3                        [{'Name': 'Dubrovin, B. A.'}]                   1981   \n",
       "4    [{'Name': 'McKean, Henry'}, {'Name': 'Moll, Vi...                   1999   \n",
       "..                                                 ...                    ...   \n",
       "111                       [{'Name': 'Okamoto, Kazuo'}]                   1986   \n",
       "112                        [{'Name': 'Manin, Yu. I.'}]                   1998   \n",
       "113                       [{'Name': 'Okamoto, Kazuo'}]                   1986   \n",
       "114                        [{'Name': 'Siegel, C. L.'}]                   1989   \n",
       "115                  [{'Name': 'Markushevich, A. I.'}]                   1992   \n",
       "\n",
       "                                      Target.Publisher  \\\n",
       "0    New York etc.: Springer-Verlag. 510 p. DM 148....   \n",
       "1    Cambridge: Cambridge University Press. xiii, 2...   \n",
       "2    London Mathematical Society Student Texts 67. ...   \n",
       "3         Usp. Mat. Nauk 36, No. 2(218), 11-80 (1981).   \n",
       "4    Cambridge: Cambridge University Press. xiii, 2...   \n",
       "..                                                 ...   \n",
       "111                    Math. Ann. 275, 221-255 (1986).   \n",
       "112  Khovanskij, A. (ed.) et al., Geometry of diffe...   \n",
       "113                    Math. Ann. 275, 221-255 (1986).   \n",
       "114  Wiley Classics Library. New York: John Wiley \\...   \n",
       "115  Translations of Mathematical Monographs. 96. P...   \n",
       "\n",
       "    LinkProvider.provider_name LinkProvider.identifier.ID  \\\n",
       "0                       zbMATH                     zbMATH   \n",
       "1                       zbMATH                     zbMATH   \n",
       "2                       zbMATH                     zbMATH   \n",
       "3                       zbMATH                     zbMATH   \n",
       "4                       zbMATH                     zbMATH   \n",
       "..                         ...                        ...   \n",
       "111                     zbMATH                     zbMATH   \n",
       "112                     zbMATH                     zbMATH   \n",
       "113                     zbMATH                     zbMATH   \n",
       "114                     zbMATH                     zbMATH   \n",
       "115                     zbMATH                     zbMATH   \n",
       "\n",
       "     LinkProvider.identifier.IDScheme LinkProvider.identifier.IDURL  \n",
       "0                       zbMATH scheme           https://zbmath.org/  \n",
       "1                       zbMATH scheme           https://zbmath.org/  \n",
       "2                       zbMATH scheme           https://zbmath.org/  \n",
       "3                       zbMATH scheme           https://zbmath.org/  \n",
       "4                       zbMATH scheme           https://zbmath.org/  \n",
       "..                                ...                           ...  \n",
       "111                     zbMATH scheme           https://zbmath.org/  \n",
       "112                     zbMATH scheme           https://zbmath.org/  \n",
       "113                     zbMATH scheme           https://zbmath.org/  \n",
       "114                     zbMATH scheme           https://zbmath.org/  \n",
       "115                     zbMATH scheme           https://zbmath.org/  \n",
       "\n",
       "[116 rows x 24 columns]"
      ]
     },
     "execution_count": 9,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "import requests, json\n",
    "alg_geo_json = requests.get('https://zblink.formulasearchengine.com/links_api/link/?msc%20classification%20code=14')\n",
    "alg_geo_data = json.loads(alg_geo_json.text)\n",
    "df = pd.json_normalize(alg_geo_data)\n",
    "df"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "From the returned articles we select only those where the primary MSC is \"14\"."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 10,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/html": [
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       "        vertical-align: top;\n",
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       "\n",
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       "        text-align: right;\n",
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       "</style>\n",
       "<table border=\"1\" class=\"dataframe\">\n",
       "  <thead>\n",
       "    <tr style=\"text-align: right;\">\n",
       "      <th></th>\n",
       "      <th>Source.Identifier.ID</th>\n",
       "      <th>Target.Identifier.ID</th>\n",
       "      <th>Target.Type.Subtype</th>\n",
       "    </tr>\n",
       "  </thead>\n",
       "  <tbody>\n",
       "    <tr>\n",
       "      <th>2</th>\n",
       "      <td>23#info</td>\n",
       "      <td>1105.14001</td>\n",
       "      <td>14-02 33-02 14K25 33E05 11E25 14-01 33-01 14K2...</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>5</th>\n",
       "      <td>20#info</td>\n",
       "      <td>1105.14001</td>\n",
       "      <td>14-02 33-02 14K25 33E05 11E25 14-01 33-01 14K2...</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>7</th>\n",
       "      <td>19#info</td>\n",
       "      <td>1105.14001</td>\n",
       "      <td>14-02 33-02 14K25 33E05 11E25 14-01 33-01 14K2...</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>9</th>\n",
       "      <td>21#info</td>\n",
       "      <td>0509.14049</td>\n",
       "      <td>14K25 11F11 33E05 14-02 14K10 14H10 14K30</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>12</th>\n",
       "      <td>22#info</td>\n",
       "      <td>1105.14001</td>\n",
       "      <td>14-02 33-02 14K25 33E05 11E25 14-01 33-01 14K2...</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>29</th>\n",
       "      <td>23.20#ii.p6</td>\n",
       "      <td>0872.14041</td>\n",
       "      <td>14Q05 14H52 11Y16 68W30 14G35 14-04</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>32</th>\n",
       "      <td>21.7#i.p4</td>\n",
       "      <td>0588.14019</td>\n",
       "      <td>14Hxx 14-02 14-03 14H20 30F10 14-01 58C15 51N1...</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>33</th>\n",
       "      <td>21.5#i.info</td>\n",
       "      <td>0509.14049</td>\n",
       "      <td>14K25 11F11 33E05 14-02 14K10 14H10 14K30</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>42</th>\n",
       "      <td>20.9#ii.p2</td>\n",
       "      <td>0848.14012</td>\n",
       "      <td>14H05 14H42 14-02 14K25</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>47</th>\n",
       "      <td>21.10#I1.i3.p1</td>\n",
       "      <td>1054.14079</td>\n",
       "      <td>14Q05 14H70 30-04 30F30 35B10</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>52</th>\n",
       "      <td>21.7#i.p4</td>\n",
       "      <td>0549.14014</td>\n",
       "      <td>14K25 14K30 58J60 14-02 33E05 14H40 58J15 35Q99</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>54</th>\n",
       "      <td>21.3#i.info</td>\n",
       "      <td>0509.14049</td>\n",
       "      <td>14K25 11F11 33E05 14-02 14K10 14H10 14K30</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>56</th>\n",
       "      <td>21.3#ii.info</td>\n",
       "      <td>0509.14049</td>\n",
       "      <td>14K25 11F11 33E05 14-02 14K10 14H10 14K30</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>60</th>\n",
       "      <td>21.6#i.info</td>\n",
       "      <td>0509.14049</td>\n",
       "      <td>14K25 11F11 33E05 14-02 14K10 14H10 14K30</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>64</th>\n",
       "      <td>21.10#I1.i1.p1</td>\n",
       "      <td>0964.14047</td>\n",
       "      <td>14Q15 30F10 14H55 32G20 14-04</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>69</th>\n",
       "      <td>21.7#iii.info</td>\n",
       "      <td>0549.14014</td>\n",
       "      <td>14K25 14K30 58J60 14-02 33E05 14H40 58J15 35Q99</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>73</th>\n",
       "      <td>21.5#ii.info</td>\n",
       "      <td>0251.14016</td>\n",
       "      <td>14-02 14K25 32N05</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>84</th>\n",
       "      <td>21.8#p1</td>\n",
       "      <td>0251.14016</td>\n",
       "      <td>14-02 14K25 32N05</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>87</th>\n",
       "      <td>21#info</td>\n",
       "      <td>0251.14016</td>\n",
       "      <td>14-02 14K25 32N05</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>93</th>\n",
       "      <td>21#info</td>\n",
       "      <td>0549.14014</td>\n",
       "      <td>14K25 14K30 58J60 14-02 33E05 14H40 58J15 35Q99</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>104</th>\n",
       "      <td>21.7#ii.info</td>\n",
       "      <td>0549.14014</td>\n",
       "      <td>14K25 14K30 58J60 14-02 33E05 14H40 58J15 35Q99</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>107</th>\n",
       "      <td>21.6#ii.p1</td>\n",
       "      <td>0347.14023</td>\n",
       "      <td>14K25</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>110</th>\n",
       "      <td>22.18#iv.p1</td>\n",
       "      <td>0615.14018</td>\n",
       "      <td>14Hxx 14-02 11-02 11R58 11F03 14H05 11G15 14K2...</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>112</th>\n",
       "      <td>32.2#iv.p1</td>\n",
       "      <td>0948.14025</td>\n",
       "      <td>14H52 34M55 34M15 14N35 14K20</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>115</th>\n",
       "      <td>21.8#p1</td>\n",
       "      <td>0743.14033</td>\n",
       "      <td>14K20 14H05 33E05 14-01 32N05</td>\n",
       "    </tr>\n",
       "  </tbody>\n",
       "</table>\n",
       "</div>"
      ],
      "text/plain": [
       "    Source.Identifier.ID Target.Identifier.ID  \\\n",
       "2                23#info           1105.14001   \n",
       "5                20#info           1105.14001   \n",
       "7                19#info           1105.14001   \n",
       "9                21#info           0509.14049   \n",
       "12               22#info           1105.14001   \n",
       "29           23.20#ii.p6           0872.14041   \n",
       "32             21.7#i.p4           0588.14019   \n",
       "33           21.5#i.info           0509.14049   \n",
       "42            20.9#ii.p2           0848.14012   \n",
       "47        21.10#I1.i3.p1           1054.14079   \n",
       "52             21.7#i.p4           0549.14014   \n",
       "54           21.3#i.info           0509.14049   \n",
       "56          21.3#ii.info           0509.14049   \n",
       "60           21.6#i.info           0509.14049   \n",
       "64        21.10#I1.i1.p1           0964.14047   \n",
       "69         21.7#iii.info           0549.14014   \n",
       "73          21.5#ii.info           0251.14016   \n",
       "84               21.8#p1           0251.14016   \n",
       "87               21#info           0251.14016   \n",
       "93               21#info           0549.14014   \n",
       "104         21.7#ii.info           0549.14014   \n",
       "107           21.6#ii.p1           0347.14023   \n",
       "110          22.18#iv.p1           0615.14018   \n",
       "112           32.2#iv.p1           0948.14025   \n",
       "115              21.8#p1           0743.14033   \n",
       "\n",
       "                                   Target.Type.Subtype  \n",
       "2    14-02 33-02 14K25 33E05 11E25 14-01 33-01 14K2...  \n",
       "5    14-02 33-02 14K25 33E05 11E25 14-01 33-01 14K2...  \n",
       "7    14-02 33-02 14K25 33E05 11E25 14-01 33-01 14K2...  \n",
       "9            14K25 11F11 33E05 14-02 14K10 14H10 14K30  \n",
       "12   14-02 33-02 14K25 33E05 11E25 14-01 33-01 14K2...  \n",
       "29                 14Q05 14H52 11Y16 68W30 14G35 14-04  \n",
       "32   14Hxx 14-02 14-03 14H20 30F10 14-01 58C15 51N1...  \n",
       "33           14K25 11F11 33E05 14-02 14K10 14H10 14K30  \n",
       "42                             14H05 14H42 14-02 14K25  \n",
       "47                       14Q05 14H70 30-04 30F30 35B10  \n",
       "52     14K25 14K30 58J60 14-02 33E05 14H40 58J15 35Q99  \n",
       "54           14K25 11F11 33E05 14-02 14K10 14H10 14K30  \n",
       "56           14K25 11F11 33E05 14-02 14K10 14H10 14K30  \n",
       "60           14K25 11F11 33E05 14-02 14K10 14H10 14K30  \n",
       "64                       14Q15 30F10 14H55 32G20 14-04  \n",
       "69     14K25 14K30 58J60 14-02 33E05 14H40 58J15 35Q99  \n",
       "73                                   14-02 14K25 32N05  \n",
       "84                                   14-02 14K25 32N05  \n",
       "87                                   14-02 14K25 32N05  \n",
       "93     14K25 14K30 58J60 14-02 33E05 14H40 58J15 35Q99  \n",
       "104    14K25 14K30 58J60 14-02 33E05 14H40 58J15 35Q99  \n",
       "107                                              14K25  \n",
       "110  14Hxx 14-02 11-02 11R58 11F03 14H05 11G15 14K2...  \n",
       "112                      14H52 34M55 34M15 14N35 14K20  \n",
       "115                      14K20 14H05 33E05 14-01 32N05  "
      ]
     },
     "execution_count": 10,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "alg_geo_prim=df[['Source.Identifier.ID','Target.Identifier.ID','Target.Type.Subtype']][df['Target.Type.Subtype'].str.startswith('14')]\n",
    "alg_geo_prim"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "We group by target article to account for articles that are linked multiple times."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 11,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/html": [
       "<div>\n",
       "<style scoped>\n",
       "    .dataframe tbody tr th:only-of-type {\n",
       "        vertical-align: middle;\n",
       "    }\n",
       "\n",
       "    .dataframe tbody tr th {\n",
       "        vertical-align: top;\n",
       "    }\n",
       "\n",
       "    .dataframe thead th {\n",
       "        text-align: right;\n",
       "    }\n",
       "</style>\n",
       "<table border=\"1\" class=\"dataframe\">\n",
       "  <thead>\n",
       "    <tr style=\"text-align: right;\">\n",
       "      <th></th>\n",
       "      <th>Source.Identifier.ID</th>\n",
       "      <th>Target.Type.Subtype</th>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>Target.Identifier.ID</th>\n",
       "      <th></th>\n",
       "      <th></th>\n",
       "    </tr>\n",
       "  </thead>\n",
       "  <tbody>\n",
       "    <tr>\n",
       "      <th>0251.14016</th>\n",
       "      <td>3</td>\n",
       "      <td>3</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>0347.14023</th>\n",
       "      <td>1</td>\n",
       "      <td>1</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>0509.14049</th>\n",
       "      <td>5</td>\n",
       "      <td>5</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>0549.14014</th>\n",
       "      <td>4</td>\n",
       "      <td>4</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>0588.14019</th>\n",
       "      <td>1</td>\n",
       "      <td>1</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>0615.14018</th>\n",
       "      <td>1</td>\n",
       "      <td>1</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>0743.14033</th>\n",
       "      <td>1</td>\n",
       "      <td>1</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>0848.14012</th>\n",
       "      <td>1</td>\n",
       "      <td>1</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>0872.14041</th>\n",
       "      <td>1</td>\n",
       "      <td>1</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>0948.14025</th>\n",
       "      <td>1</td>\n",
       "      <td>1</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>0964.14047</th>\n",
       "      <td>1</td>\n",
       "      <td>1</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>1054.14079</th>\n",
       "      <td>1</td>\n",
       "      <td>1</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>1105.14001</th>\n",
       "      <td>4</td>\n",
       "      <td>4</td>\n",
       "    </tr>\n",
       "  </tbody>\n",
       "</table>\n",
       "</div>"
      ],
      "text/plain": [
       "                      Source.Identifier.ID  Target.Type.Subtype\n",
       "Target.Identifier.ID                                           \n",
       "0251.14016                               3                    3\n",
       "0347.14023                               1                    1\n",
       "0509.14049                               5                    5\n",
       "0549.14014                               4                    4\n",
       "0588.14019                               1                    1\n",
       "0615.14018                               1                    1\n",
       "0743.14033                               1                    1\n",
       "0848.14012                               1                    1\n",
       "0872.14041                               1                    1\n",
       "0948.14025                               1                    1\n",
       "0964.14047                               1                    1\n",
       "1054.14079                               1                    1\n",
       "1105.14001                               4                    4"
      ]
     },
     "execution_count": 11,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "alg_geo_prim.groupby('Target.Identifier.ID').count()"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "In the end, we get the same number as in the statistics output."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 12,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "Source.Identifier.ID    13\n",
       "Target.Type.Subtype     13\n",
       "dtype: int64"
      ]
     },
     "execution_count": 12,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "_.count()"
   ]
  }
 ],
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