Ezequiel Dratman

activity

20172026

most citedThe determinant of the distance matrix of graphs with at most two cycles

1 citations · 1 across the 5 of their papers we have counts for

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math.SP2026

A Sharp Forbidden Interval for the Nontrivial Adjacency Eigenvalues of Trivially Perfect Graphs

Cristian M. Conde, Ezequiel Dratman, Luciano N. Grippo

We prove a sharp forbidden interval for the nontrivial adjacency eigenvalues of trivially perfect graphs. More precisely, we show that if $G$ is a trivially perfect graph, then $\o…

math.SP2020

On the spectral radius of block graphs having all their blocks of the same size

Cristian M. Conde, Ezequiel Dratman, Luciano N. Grippo

Let $B (n, q)$ be the class of block graphs on $n$ vertices having all their blocks of the same size. We prove that if $G \in B (n, q)$ has at most three pairwise ad…