The snail lemma
Article by Enrico M. Vitale
In collections: Attention-grabbing titles, Animals
The classical snake lemma produces a six terms exact sequence starting from a commutative square with one of the edge being a regular epimorphism. We establish a new diagram lemma, that we call snail lemma, removing...
URL: tac.mta.ca/tac/volumes/31/19/3
PDF: tac.mta.ca/tac/volumes/31/19/3
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