Title of article
ON THE DIAMETER OF THE COMMUTING GRAPH OF THE FULL MATRIX RING OVER THE REAL NUMBERS
Author/Authors
Grau ، J. M. - Universidad de Oviedo , OLLER-MARCEN ، A. M. Centro Universitario de la Defensa de Zaragoza , Tasis ، C. - Universidad de Oviedo
Pages
5
From page
217
To page
221
Abstract
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.
Keywords
Commuting graph , diameter , idempotent matrix
Journal title
Bulletin of the Iranian Mathematical Society
Serial Year
2017
Journal title
Bulletin of the Iranian Mathematical Society
Record number
2456166
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