J. Grau

activity

20102025

most citedOn the diameter of the commuting graph of the full matrix ring over the real numbers

9 citations · 36 across the 31 of their papers we have counts for

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Showing 2014 · math.RAShow all

2 papers · 2 filters

math.RA2014★ 9 cited

On the diameter of the commuting graph of the full matrix ring over the real numbers

Jose Maria Grau, Antonio Oller-Marcen, Carmen Tasis

In a recent paper C. Miguel proved that the diameter of the commuting graph of the matrix ring $M_{n} (R)$ is equal to $4$ either if $n = 3$ or $n > 4$ . But the case $n=…

math.RA2014★ 2 cited

On the structure of quaternion rings over $Z / n Z$

Jose Maria Grau, Celino Miquel, Antonio Oller-marcen

In this paper we investigate the structure of $(\frac{a , b}{Z n})$ , the quaternion rings over $Z n$ . It is proved that these rings are isomorphic to $\left(\frac{-1,-…

On the diameter of the commuting graph of the full matrix ring over the real numbers

On the structure of quaternion rings over Z/nZ

On the structure of quaternion rings over $Z / n Z$