{ "id": "1809.08594", "version": "v1", "published": "2018-09-23T13:15:21.000Z", "updated": "2018-09-23T13:15:21.000Z", "title": "A counterexample to a conjecture of Wang and Hou on signed graphs", "authors": [ "Asghar Bahmani" ], "comment": "3 pages, 2 figures", "categories": [ "math.CO" ], "abstract": "We give a counterexample to a conjecture of Wang and Hou related with the sum of the $k$ largest Laplacian eigenvalues of signed graphs.", "revisions": [ { "version": "v1", "updated": "2018-09-23T13:15:21.000Z" } ], "analyses": { "subjects": [ "05C50" ], "keywords": [ "signed graphs", "counterexample", "conjecture" ], "note": { "typesetting": "TeX", "pages": 3, "language": "en", "license": "arXiv", "status": "editable" } } }