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Homotopy theory, homological algebra, algebraic treatments of manifolds.

12 votes

Computational software in Algebraic Topology?

Sage allows you to play with simplicial complexes and their (co)homology. http://www.sagemath.org/doc/reference/sage/homology/simplicial_complex.html http://www.sagemath.org/doc/reference/sage/homol …
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