{ "id": "1902.02608", "version": "v1", "published": "2019-02-07T13:18:34.000Z", "updated": "2019-02-07T13:18:34.000Z", "title": "Spectra of eccentricity matrices of graphs", "authors": [ "Iswar Mahato", "R. Gurusamy", "M. Rajesh Kannan", "S. Arockiaraj" ], "comment": "Comments are welcome!", "categories": [ "math.CO", "math.SP" ], "abstract": "The eccentricity matrix of a connected graph $G$ is obtained from the distance matrix of $G$ by retaining the largest distances in each row and each column, and setting the remaining entries as $0$. In this article, a conjecture about the least eigenvalue of eccentricity matrices of trees, presented in the article [Jianfeng Wang, Mei Lu, Francesco Belardo, Milan Randic. The anti-adjacency matrix of a graph: Eccentricity matrix. Discrete Applied Mathematics, 251: 299-309, 2018.], is solved affirmatively. In addition to this, the spectra and the inertia of eccentricity matrices of various classes of graphs are investigated.", "revisions": [ { "version": "v1", "updated": "2019-02-07T13:18:34.000Z" } ], "analyses": { "subjects": [ "05C12", "05C50" ], "keywords": [ "eccentricity matrix", "jianfeng wang", "distance matrix", "anti-adjacency matrix", "largest distances" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }