What is $Aut_{Modk}(A)$ if A is a finite generated algebra, k is a field?
Is it a group of automorphisms of A as a vector space over k or what?
What is $Aut_{Modk}(A)$ if A is a finite generated algebra, k is a field?
Is it a group of automorphisms of A as a vector space over k or what?
CW answer to push it out of unanswered queue:
"$Modk$" should refer to the category of $k$-modules ($k$-vector spaces).