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math.MG2022
Lines in quasi-metric spaces with four points
Gabriela Araujo-Pardo, Martín Matamala, José Zamora
A set of n non-collinear points in the Euclidean plane defines at least n different lines. Chen and Chvátal in 2008 conjectured that the same results is true in metric spaces for a…
math.CO2022
Marked graphs and the chromatic symmetric function
José Aliste-Prieto, Anna de Mier, Rosa Orellana +1
The main result of this paper is the introduction of marked graphs and the marked graph polynomials (-polynomial) associated with them. These polynomials can be defined via a de…