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math.CO2024
Three observations on the Colin de Verdière spectral graph parameter
Vojtěch Kaluža, Vadym Koval
In this small note, we collect several observations pertaining to the famous spectral graph parameter introduced in 1990 by Y. Colin de Verdière. This parameter is defined as t…
math.CO2019
Even maps, the Colin de~Verdière number and representations of graphs
Vojtěch Kaluža, Martin Tancer
Van der Holst and Pendavingh introduced a graph parameter , which coincides with the more famous Colin de Verdière graph parameter for small values. However, the definition…