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$Pin$-structures on surfaces and quadratic forms

A. Degtyarev·S. Finashin
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Abstract

A correspondence between different $Pin$-type structures on a compact surface and quadratic (linear) forms on its homology is constructed. Addition of structures is defined and expressed in terms of these quadratic forms.

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BibTeXRIS

A. Degtyarev, S. Finashin. 1995-07-10. $Pin$-structures on surfaces and quadratic forms. https://arxiv.org/abs/dg-ga/9507002

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