The Chen-Ruan Cohomology of Almost Contact Orbifolds

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Comparing to the Chen-Ruan cohomology theory for the almost complex orbifolds, we study the orbifold cohomology theory for almost contact orbifolds. We define the Chen-Ruan cohomology group of any almost contact orbifold. Using the methods for almost complex orbifolds (see [2]), we define the obstruction bundle for any 3-multisector of the almost contact orbifolds and the Chen-Ruan cup product for the Chen-Ruan cohomology. We also prove that under this cup product the direct sum of all dimensional orbifold cohomology groups constitutes a cohomological ring. Finally we calculate two examples.
11 pages

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Symplectic Geometry

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http://salesiana.dossiersoluciones.com/handle/123456789/70143

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/math/0402189
 http://arxiv.org/abs/math/0402189

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arXiv