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math.CO2023
Transversal numbers of stacked spheres
Minho Cho, Jinha Kim
A stacked -sphere is the boundary complex of a stacked -ball, which is obtained by taking cone over a free -face repeatedly from a -simplex. A stacked spher…
math.CO2023
Strong Erdős-Hajnal properties in chordal graphs
Minho Cho, Andreas F. Holmsen, Jinha Kim +1
A graph class has the strong Erdős-Hajnal property (SEH-property) if there is a constant such that for every member of , eithe…