{ "id": "math/0004167", "version": "v1", "published": "2000-04-26T19:36:48.000Z", "updated": "2000-04-26T19:36:48.000Z", "title": "On toric varieties and algebraic semigroups", "authors": [ "Dmitriy Boyarchenko" ], "comment": "LaTeX, 13 pages", "categories": [ "math.AG" ], "abstract": "The main result of this paper is that every (separated) toric variety which has a semigroup structure compatible with multiplication on the underlying torus is necessarily affine. In the course of proving this statement, we also give a proof of the fact that every separated toric variety may be constructed from a certain fan in a Euclidean space. To our best knowledge, this proof differs essentially from the ones which can be found in the literature.", "revisions": [ { "version": "v1", "updated": "2000-04-26T19:36:48.000Z" } ], "analyses": { "keywords": [ "algebraic semigroups", "main result", "proof differs", "separated toric variety", "euclidean space" ], "note": { "typesetting": "LaTeX", "pages": 13, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2000math......4167B" } } }