Product and Coproduct on Fixed Point Floer Homology of Positive Dehn Twists
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arXiv
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| Format: | Preprint |
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2022
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| _version_ | 1866918185032220672 |
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| author | Yao, Yuan Zhao, Ziwen |
| author_facet | Yao, Yuan Zhao, Ziwen |
| contents | We compute the product and coproduct structures on the fixed point Floer homology of iterations on the single Dehn twist, subject to some mild topological restrictions. We show that the resulting product and coproduct structures are determined by the product and coproduct on Morse homology of the complement of the twist region, together with certain sectors of product and coproduct structures on the symplectic homology of $T^*S^1$. The computation is done via a direct enumeration of $J-$holomorphic sections: we use a local energy inequality to show that some of the putative holomorphic sections do not exist, and we use a gluing construction plus some Morse-Bott theory to construct the sections we could not rule out. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2205_14516 |
| institution | arXiv |
| publishDate | 2022 |
| record_format | arxiv |
| spellingShingle | Product and Coproduct on Fixed Point Floer Homology of Positive Dehn Twists Yao, Yuan Zhao, Ziwen Symplectic Geometry 57R58 We compute the product and coproduct structures on the fixed point Floer homology of iterations on the single Dehn twist, subject to some mild topological restrictions. We show that the resulting product and coproduct structures are determined by the product and coproduct on Morse homology of the complement of the twist region, together with certain sectors of product and coproduct structures on the symplectic homology of $T^*S^1$. The computation is done via a direct enumeration of $J-$holomorphic sections: we use a local energy inequality to show that some of the putative holomorphic sections do not exist, and we use a gluing construction plus some Morse-Bott theory to construct the sections we could not rule out. |
| title | Product and Coproduct on Fixed Point Floer Homology of Positive Dehn Twists |
| topic | Symplectic Geometry 57R58 |
| url | https://arxiv.org/abs/2205.14516 |