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math.CO2024
Coloring, list coloring, and fractional coloring in intersections of matroids
Ron Aharoni, Eli Berger, He Guo +1
It is known that in matroids the difference between the chromatic number and the fractional chromatic number is smaller than 1, and that the list chromatic number is equal to the c…
math.CO2024
An infinite family of counterexamples to a conjecture on distance magic labeling
Ehab Ebrahem, Shlomo Hoory, Dani Kotlar
This work is about a partition problem which is an instance of the distance magic graph labeling problem. Given positive integers and such that…