A. Oller-Marcén

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20082025

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

9 citations · 26 across the 23 of their papers we have counts for

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2 papers · 1 filter

math.CO2025★ 2 cited

A class of weighted Delannoy numbers

J. M. Grau, A. M Oller-Marcen, J. L. Varona

The weighted Delannoy numbers are defined by the recurrence relation $f_{m, n} = α f_{m - 1, n} + β f_{m, n - 1} + γ f_{m - 1, n - 1}$ if $mn > 0$ , with $f_{m, n} = α^{m} β^{n}$ if $nm = 0$ . In this work, we…

math.CO2009

Counting domino trains

Antonio M. Oller-Marcen

In this paper we present a way to count the number of trains that we can construct with a given set of domino pieces. As an application we obtain a new method to compute the total…