{ "id": "1111.6303", "version": "v1", "published": "2011-11-27T21:45:38.000Z", "updated": "2011-11-27T21:45:38.000Z", "title": "The A-infinity algebra of an Elliptic Curve and the j-invariant", "authors": [ "Robert Fisette" ], "categories": [ "math.AG" ], "abstract": "We compute reduced Hochschild cohomology of B = Ext\\star (O \\oplus L, O \\oplus L), where O is the structure sheaf of an elliptic curve and L is a line bundle of degree 1. The result suggests an A-infinity equivalence between the A-infinity structure computed for B in [1] and a structure in which m_3=m_4=m_5=0. We see that the j-invariant of the curve is explicitly related to this new structure.", "revisions": [ { "version": "v1", "updated": "2011-11-27T21:45:38.000Z" } ], "analyses": { "keywords": [ "elliptic curve", "a-infinity algebra", "j-invariant", "reduced hochschild cohomology", "line bundle" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2011arXiv1111.6303F" } } }