Koszulity of Splitting Algebras Associated with Cell Complexes
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چکیده
We associate to a good cell decomposition of a manifold M a quadratic algebra and show that the Koszulity of the algebra implies a restriction on the Euler characteristic of M . For a two-dimensional manifold M the algebra is Koszul if and only if the Euler characteristic of M is two.
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تاریخ انتشار 2008