{ "id": "2306.04183", "version": "v1", "published": "2023-06-07T06:32:55.000Z", "updated": "2023-06-07T06:32:55.000Z", "title": "Downgrading of a T-variety", "authors": [ "Pavankumar Dighe", "Vivek Mohan Mallick" ], "categories": [ "math.AG" ], "abstract": "For an affine $T$-variety $X$ with the action of a torus $T$, this paper provides a combinatorial description of $X$ with respect to the action of a subtorus $T' \\subset T$ in terms of a $T/T'$-invariant pp-divisor. We also describe the corresponding GIT fan.", "revisions": [ { "version": "v1", "updated": "2023-06-07T06:32:55.000Z" } ], "analyses": { "subjects": [ "14M25", "14L30", "52B20" ], "keywords": [ "downgrading", "combinatorial description", "invariant pp-divisor", "corresponding git fan" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }