{ "id": "math/0512225", "version": "v1", "published": "2005-12-11T19:50:04.000Z", "updated": "2005-12-11T19:50:04.000Z", "title": "A TQFT of Intersection Numbers on Moduli Spaces of Admissible Covers", "authors": [ "Renzo Cavalieri" ], "categories": [ "math.AG" ], "abstract": "We construct a two-level weighted TQFT whose structure coefficents are equivariant intersection numbers on moduli spaces of admissible covers. Such a structure is parallel (and strictly related) to the local Gromov-Witten theory of curves of Bryan-Pandharipande. We compute explicitly the theory using techniques of localization on moduli spaces of admissible covers of a parametrized projective line. The Frobenius Algebras we obtain are one parameter deformations of the class algebra of the symmetric group S_d. In certain special cases we are able to produce explicit closed formulas for such deformations in terms of the representation theory of S_d.", "revisions": [ { "version": "v1", "updated": "2005-12-11T19:50:04.000Z" } ], "analyses": { "subjects": [ "14N35" ], "keywords": [ "moduli spaces", "admissible covers", "produce explicit closed formulas", "equivariant intersection numbers", "local gromov-witten theory" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable", "inspire": 700342, "adsabs": "2005math.....12225C" } } }