Trace morphism in Lipman's "Dualizing sheaves, differentials and residues on algebraic varieties".
106629
Trace map from finite surjective morphism of normal irreducible varieties
121987
Direct proof that nilpotent matrix has zero trace
138298
Learning about Grothendieck's Galois Theory.
50391
Exact sequence of sheaves with non exact sequence of global sections
145700
Module isomorphic to second dual
36987
A criterion of flat modules
67633
Generic flatness on modules
154142
Finding a specific basis for an endomorphism
117151
Conformal automorphism of unit disk that interchanges two given points
34909
To what extent is a scheme morphism determined by its topological map?
13020
Proof for the funky trace derivative : $d (\operatorname{trace} (ABA'C))$?
111814
Precise connection between complexification of $\mathfrak{su}(2)$, $\mathfrak{so}(1,3)$ and $\mathfrak{sl}(2, \mathbb{C})$
115347
Showing that the fiber of a morphism of schemes over a point is homeomorphic to the preimage
121449
An isomorphism from $GL_{2}(\mathbb{F_{2}})$ to $S_{3}$
68786
"This property is local on" : properties of morphisms of $S$-schemes
92729
Morphism decomposition
146446
Infinite Degree Algebraic Field Extensions