We show that, associated with any complex root of unity *\omega*, there exists a particularly simple 4d-TQFT model *M_\omega* defined on the cobordism category of Delta complexes. For an oriented closed 4-manifold *X* of Euler characteristic *\chi(X)*, it is conjectured that the quantity *N^{3\chi(X)/2}M_\omega(X)*, where *N* is the order of... Show more

May 22, 2014

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A simple model of 4d-TQFT

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