{ "id": "1309.1040", "version": "v1", "published": "2013-09-04T14:27:55.000Z", "updated": "2013-09-04T14:27:55.000Z", "title": "A generalization of Alternating Sign Matrices", "authors": [ "Richard A. Brualdi", "Hwa Kyung Kim" ], "comment": "14 pages", "categories": [ "math.CO" ], "abstract": "In alternating sign matrices the first and last nonzero entry in each row and column is specified to be +1. Such matrices always exist. We investigate a generalization by specifying independently the sign of the first and last nonzero entry in each row and column to be either a +1 or a -1. We determine necessary and sufficient conditions for such matrices to exist.", "revisions": [ { "version": "v1", "updated": "2013-09-04T14:27:55.000Z" } ], "analyses": { "subjects": [ "05B20", "05C22", "05C50", "15B35", "15B36" ], "keywords": [ "alternating sign matrices", "generalization", "nonzero entry", "determine necessary" ], "note": { "typesetting": "TeX", "pages": 14, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2013arXiv1309.1040B" } } }