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抽象代数相关页面完善计划 #5356
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我认为这有些太多了。 但是把现有的内容按概念拆分成不同的页面,并整合到同一个目录下,还是比较重要的。 另外,“代数系统”这个概念先于群,诸如偏序集/狄尔沃斯定理等等,应当率先简要介绍。还有,“线性空间”是一种特殊的代数结构,似乎应当放在后面。 —— |
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我觉得应该没必要介绍模,所以线性空间维持原状就好 |
不知您认为目前列表里哪些是没有必要的,我认为至少群论和环论里列出来的部分都是较为基础且重要的概念,而且目前在 OI Wiki 这边也已经得到了一定程度的应用。
这是序理论的内容,不在本 issue 讨论的范围内。 |
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线性代数内容应该也要大修。 |
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这个得有人有时间愿意修才行。 |
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我现在认为已经够用了,很符合我的预期。如果后续能较浅的讲讲Galois理论就更好了。知乎上现在有各式各样的速通,比如根的置换理论啥的。 另外比如简单高次方程的解法(根号表示),恰好可以写在这里。 |
环里面得介绍一下环的进阶内容。大家并不会只研究一个普通的环,往往会研究: · 幺环:含有乘法单位元的环
参见:https://zhuanlan.zhihu.com/p/53621008 这部分书写的必要性,是因为在数论部分的最后几个页面,研究的都是整环,而非一般的环。里面讲了很多单纯属于整环的内容,事实上可以挪出来。
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目前 OI Wiki 已有一些抽象代数的内容,如 群论简介 与 置换群,也有对一些具体代数结构的介绍,如 一元多项式环与形式幂级数环、二次域。这些内容目前有如下问题:
所以我认为目前 OI Wiki 需要完善部分抽象代数相关内容的介绍,但是抽象代数对于 OI 来说可能较为艰深晦涩,所以不宜引入过多内容,且应更多侧重于对具体例子的分析。
我认为需要完善的具体内容如下:
由于本人对抽象代数在算法竞赛中的应用程度不够熟悉,所以列表里可能有缺失和多余的内容,欢迎大家批评指正 ❤️
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