## homologyA way of attaching Abelian groups, or more elaborate algebraic objects, to a topological space so as to obtain algebraic invariants. In a sense, it detects the presence of "holes" of various dimensions in the space. The methods developed to handle this led to what is now called homological algebra,
a subject in which homological invariants are calculated for many purely
algebraic structures. ## Related category• TOPOLOGY | |||||

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