A. Berman

activity

20132025

most citedNew results on the cp rank and related properties of co(mpletely)positive matrices

37 citations · 59 across the 10 of their papers we have counts for

collaborators

Showing 2018Show all

3 papers · 1 filter

cs.DM2018

Rank of weighted digraphs with blocks

Ranveer Singh, Swarup Kumar Panda, Naomi Shaked-Monderer +1

Let $G$ be a digraph and $r (G)$ be its rank. Many interesting results on the rank of an undirected graph appear in the literature, but not much information about the rank of a digr…

math.CO2018

A family of graphs that are determined by their normalized Laplacian spectra

Abraham Berman, Dong-Mei Chen, Zhi-Bing Chen +2

Let $F_{p, q}$ be the generalized friendship graph $K_{1} ⋁ (p K_{q})$ on $pq + 1$ vertices obtained by joining a vertex to all vertices of $p$ disjoint copies of the complete graph $…

cs.DM2018★ 2 cited

Nonsingular Block Graphs: An Open Problem

Ranveer Singh, Cheng Zheng, Naomi Shaked-Monderer +1

A block graph is a graph in which every block is a complete graph. Let $G$ be a block graph and let $A (G)$ be its (0,1)-adjacency matrix. Graph $G$ is called nonsingular (singular)…