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SpectralSequences :: connectingMorphism(ChainComplexMap,ZZ)

connectingMorphism(ChainComplexMap,ZZ) -- use spectral sequences to compute connecting morphisms

Synopsis

Description

Given a morphism $f: A \rightarrow B$ of chain complexes returns the connecting map $H_{n+1}(coker f) \rightarrow H_n (im f)$.