J. Sigarreta

activity

20062026

most citedGlobal defensive k-alliances in graphs

32 citations · 177 across the 37 of their papers we have counts for

collaborators

Showing 2015Show all

3 papers · 1 filter

math.CO2015

Alliance polynomial of regular graphs

Walter Carballosa, José M. Rodríguez, José M. Sigarreta +1

The alliance polynomial of a graph $G$ with order $n$ and maximum degree $Δ$ is the polynomial $A (G; x) = \sum_{k = - Δ}^{Δ} A_{k} (G) x^{n + k}$ , where $A_{k} (G)$ is the number of exac…

math.MG2015★ 1 cited

Gromov hyperbolicity of minor graphs

Walter Carballosa, José M. Rodríguez, Omar Rosario +1

If $X$ is a geodesic metric space and $x_{1}, x_{2}, x_{3} \in X$ , a geodesic triangle $T = {x_{1}, x_{2}, x_{3}}$ is the union of the three geodesics $[x_{1} x_{2}]$ , $[x_{2} x_{3}]$ and $[x_{3} x_{1}]$ in $X$ .…

math.CO2015

On the adjacency dimension of graphs

A. Estrada-Moreno, Y. Ramirez-Cruz, J. A. Rodriguez-Velazquez

A generator of a metric space is a set $S$ of points in the space with the property that every point of the space is uniquely determined by its distances from the elements of $S$ .…