{ "id": "1805.03778", "version": "v1", "published": "2018-05-10T01:40:23.000Z", "updated": "2018-05-10T01:40:23.000Z", "title": "Threshold functions for patterns in random subsets of finite vector spaces", "authors": [ "Changhao Chen", "Catherine Greenhill" ], "comment": "15 pages", "categories": [ "math.CO" ], "abstract": "We study the existence of certain \"patterns\" in random subsets of vector spaces over finite fields. The patterns we consider are three-term arithmetic progressions, right triangles, parallelograms and affine planes. We give a threshold function for the property that a random subset of vectors contains a pattern from a given family, and show that the number of patterns contained in the random subset is asymptotically Poisson at the threshold scale.", "revisions": [ { "version": "v1", "updated": "2018-05-10T01:40:23.000Z" } ], "analyses": { "keywords": [ "random subset", "finite vector spaces", "threshold function", "three-term arithmetic progressions", "right triangles" ], "note": { "typesetting": "TeX", "pages": 15, "language": "en", "license": "arXiv", "status": "editable" } } }