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paper

Regular obstructed categories and TQFT

arXiv:math/0202216 · doi:10.1063/1.1473681

Abstract

A proposal of the concept of $n$-regular obstructed categories is given. The corresponding regularity conditions for mappings, morphisms and related structures in categories are considered. An n-regular TQFT is introduced. It is shown the connection of time reversibility with the regularity.

22 pages in Latex. To be published in J. Math. Phys