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The Chen-Ruan Cohomology of Almost Contact Orbifolds | Fan Ding
; Yunfeng Jiang
; Jianzhong Pan
; | Date: |
12 Feb 2004 | Subject: | Symplectic Geometry | math.SG | Abstract: | 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. | Source: | arXiv, math.SG/0402189 | Services: | Forum | Review | PDF | Favorites |
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