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Sheafhom is a set of programs for homological algebra and algebraic topology . I t allows you to work with finite-dimensional vector spaces over Q and their morphisms (i .e. linear maps). The system supports tensor products, direct sums, and wedge products, as wel l as partially-ordered sets. A data structure called a sheaf represents sheaves (like the inter section homology sheaves) on certain topological spaces. This includes the spaces given by regular cell complexes and simplicial complexes.

Current Version:   May 11, 1996

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