Keywords: EquivalenceOfExtensions.png math en A commutative diagram for the definition of equivalence of extensions of modules Own User RobHar 2008-12-05 Public Domain Data file The following is the LaTeX code used to produce this output \begin CD 0 >>> B >>> E >>> A >>> 0 \\ VV \wr V \\ 0 >>> B >>> E \prime >>> A >>> 0 \end CD Complexes algebra |