G.R. Omidi

activity

20122017

most citedGraphs whose normalized Laplacian has three eigenvalues

24 citations · 25 across the 3 of their papers we have counts for

collaborators

3 papers

math.CO2017

Stars versus stripes Ramsey numbers

G. R. Omidi, G. Raeisi, Z. Rahimi

For given simple graphs $G_{1}, G_{2}, \dots, G_{t}$ , the Ramsey number $R (G_{1}, G_{2}, \dots, G_{t})$ is the smallest positive integer $n$ such that if the edges of the complete graph $K_…

math.CO2014★ 1 cited

Monochromatic Hamiltonian Berge-cycles in colored hypergraphs

G. R. Omidi, L. Maherani

It has been conjectured that for any fixed r and sufficiently large n, there is a monochromatic Hamiltonian Berge-cycle in every (r - 1)-coloring of the edges of the complete r-uni…

math.CO2012★ 24 cited

Graphs whose normalized Laplacian has three eigenvalues

Edwin R. van Dam, Gholamreza Omidi

We give a combinatorial characterization of graphs whose normalized Laplacian has three distinct eigenvalues. Strongly regular graphs and complete bipartite graphs are examples of…