KnowraSnake lemmaLinked fromLinked fromThe 5 pages that link to Snake lemma, each with the reason it gives.All 5Related 5Exact sequenceRelated: It shows how exactness transfers through diagrams and produces connecting homomorphisms.Abelian categoryRelated: Its proof and statement work in abelian categories using kernels and cokernels.Five lemmaRelated: It belongs to the same family of diagram lemmas that organizes homological algebra.Nine lemmaRelated: Its kernel-and-cokernel argument is a standard route to proving the Nine lemma.Zig-zag lemmaRelated: The same lift-and-boundary pattern underlies the connecting map in both results.