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Homology group

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(See attached file for full problem description)

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Determine the structure of the homology group Hn(X), n  0, if X is
(a) the set of rational numbers with their usual topology;
(b) a countable, discrete set.

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(a slightly modified version of homology for which a point has trivial homology groups in ALL dimensions, including zero, is reduced homology -- so i presume we're working with a nonreduced homology ...

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