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07/10/2023
Winding number and circular 4-coloring of signed graphs
Concerning the recent notion of circular chromatic number of signed grap...
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06/13/2023
An update on (n,m)-chromatic numbers
An (n,m)-graph is a graph with n types of arcs and m types of edges. A h...
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06/13/2023
On relative clique number of triangle-free planar (n,m)-graphs
An (n,m)-graph is a graph with n types of arcs and m types of edges. A h...
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04/04/2022