60697 20190709135444.0 sideral 98148 ART-2017-98148 eng Grau, J.M. On the diameter of the commuting graph of the full matrix ring over the real numbers 2017 Access copy available to the general public Unrestricted In a recent paper C. Miguel proved that the diameter of the commuting graph of the matrix ring Mn(R) is equal to 4 if either n = 3 or n = 5. But the case n = 4 remained open, since the diameter could be 4 or 5. In this work we close the problem showing that also in this case the diameter is 4. info:eu-repo/semantics/openAccess by-nc http://creativecommons.org/licenses/by-nc/3.0/es/ 0.28 2017 MATHEMATICS 297 / 309 = 0.961 2017 Q4 T3 0.301 2017 Mathematics (miscellaneous) 2017 Q3 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion (orcid)0000-0002-8191-3199 Oller-Marcén, A.M. Tasis, C. 43, 1 (2017), 217-221 Bull. iran. math. soc. Bulletin of the Iranian Mathematical Society 1018-6301 http://bims.iranjournals.ir/article_1007_0.html Texto completo de la revista 131839 http://zaguan.unizar.es/record/60697/files/texto_completo.pdf Versión publicada 51046 http://zaguan.unizar.es/record/60697/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:60697 articulos driver 2019-07-09-11:37:35 ARTICLE