Merge pull request #26554 from haru-44/default_sort_key

Fix min/max using `default_sort_key`

sympy/functions/special/tensor_functions.py

@@ -193,7 +193,7 @@ def eval(cls, i, j, delta_range=None):
         # to make KroneckerDelta canonical
         # following lines will check if inputs are in order
         # if not, will return KroneckerDelta with correct order
-        if i != min(i, j, key=default_sort_key):
+        if default_sort_key(j) < default_sort_key(i):
             if delta_range:
                 return cls(j, i, delta_range)
             else:

sympy/simplify/sqrtdenest.py

@@ -12,7 +12,7 @@ def is_sqrt(expr):
     return expr.is_Pow and expr.exp.is_Rational and abs(expr.exp) is S.Half
 
 
-def sqrt_depth(p):
+def sqrt_depth(p) -> int:
     """Return the maximum depth of any square root argument of p.
 
     >>> from sympy.functions.elementary.miscellaneous import sqrt
@@ -34,12 +34,11 @@ def sqrt_depth(p):
         return 1
     if p.is_Atom:
         return 0
-    elif p.is_Add or p.is_Mul:
-        return max([sqrt_depth(x) for x in p.args], key=default_sort_key)
-    elif is_sqrt(p):
+    if p.is_Add or p.is_Mul:
+        return max(sqrt_depth(x) for x in p.args)
+    if is_sqrt(p):
         return sqrt_depth(p.base) + 1
-    else:
-        return 0
+    return 0
 
 
 def is_algebraic(p):