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C should be B

1 parent d520c74 commit 892db41d9f661eece82619c43a061e3f04140384 @aisejohan aisejohan committed Feb 17, 2017
Showing with 1 addition and 1 deletion.
  1. +1 −1 homology.tex
@@ -1033,7 +1033,7 @@ \section{Extensions}
Let $\mathcal{A}$ be an abelian category.
-Let $A, C \in \Ob(\mathcal{A})$.
+Let $A, B \in \Ob(\mathcal{A})$.
An {\it extension $E$ of $B$ by $A$} is a short
exact sequence

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