{ "id": "2202.00311", "version": "v1", "published": "2022-02-01T10:18:55.000Z", "updated": "2022-02-01T10:18:55.000Z", "title": "The intersection form on the homology of a surface acted on by a finite group", "authors": [ "Jean Barge", "Julien Marche" ], "categories": [ "math.GT", "math.AT" ], "abstract": "Let G be a finite group acting freely on a compact oriented surface S by homeomorphisms preserving the orientation. Then, there exists a G-invariant Lagrangian subspace in the first homology group of S.", "revisions": [ { "version": "v1", "updated": "2022-02-01T10:18:55.000Z" } ], "analyses": { "keywords": [ "intersection form", "first homology group", "g-invariant lagrangian subspace", "compact oriented surface", "orientation" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }