Source: wikibot/lyndon-hochschild-serre-spectral-sequence
= Lyndon–Hochschild–Serre spectral sequence
{wiki=Lyndon–Hochschild–Serre_spectral_sequence}
The Lyndon–Hochschild–Serre spectral sequence is a tool in algebraic topology and homological algebra that arises in the context of group cohomology and the study of group extensions. It provides a method for computing the cohomology of a group \\( G \\) by relating it to the cohomology of a normal subgroup \\( N \\) and the quotient group \\( G/N \\).