Meaning of cohomology | Babel Free

Definitions

1. A method of contravariantly associating a family of invariant quotient groups to each algebraic or geometric object of a category, including categories of geometric and algebraic objects.
   countable, uncountable
2. A system of quotient groups associated to a topological space.
   countable, uncountable

Equivalents

Examples

“In section 1 we start⟳ off by recalling some fundamental results in cohomology of groups, in particular the Evens–Venkov result⟳ on finite generation of the cohomology ring⟳ (Theorem 2) and Quillen's landmark result⟳ which describes H*BG up to F-isomorphism (Theorem 5).”

CEFR level