- contrahomology isomorphism
- мат.изоморфизм групп когомологий
English-Russian scientific dictionary. 2008.
English-Russian scientific dictionary. 2008.
Fundamental group — In mathematics, the fundamental group is one of the basic concepts of algebraic topology. Associated with every point of a topological space there is a fundamental group that conveys information about the 1 dimensional structure of the portion of … Wikipedia