Homology Theory

In mathematics, homology theory is the axiomatic study of the intuitive geometric idea of homology of cycles on topological spaces.

Read more about Homology Theory:  General Idea, Cohomology, Applications, Intersection Theory and Poincaré Duality, Connection With Integration, Axiomatics and Generalised Homology, Homological Algebra and Homology of Other Objects

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    The theory [before the twentieth century] ... was that all the jobs in the world belonged by right to men, and that only men were by nature entitled to wages. If a woman earned money, outside domestic service, it was because some misfortune had deprived her of masculine protection.
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