activity
20152021
most citedCollapsibility of noncover complexes of chordal graphs

1 citations · 2 across the 6 of their papers we have counts for

collaborators

13 papers

math.CO2021

A system of disjoint representatives of line segments with given directions

Jinha Kim, Minki Kim, O-Joung Kwon

We prove that for all positive integers and , there exists an integer satisfying the following. If is a set of direction vectors in the plane and $\math…

math.CO2021

Domination numbers and noncover complexes of hypergraphs

Jinha Kim, Minki Kim

Let be a hypergraph on a finite set . A {\em cover} of is a set of vertices that meets all edges of . If is not a cover of $\mathcal…

math.CO2020

Badges and rainbow matchings

Ron Aharoni, Joseph Briggs, Jinha Kim +1

Drisko proved that matchings of size in a bipartite graph have a rainbow matching of size . For general graphs it is conjectured that matchings suffice for this…

math.CO2020

A sharp Ore-type condition for a connected graph with no induced star to have a Hamiltonian path

Ilkyoo Choi, Jinha Kim

We say a graph has a Hamiltonian path if it has a path containing all vertices of . For a graph , let denote the minimum degree sum of two nonadjacent vertices o…

math.CO2020

Rainbow independent sets on dense graph classes

Jinha Kim, Minki Kim, O-joung Kwon

Given a family of independent sets in a graph, a rainbow independent set is an independent set such that there is an injection where fo…

math.CO20191 cited

Rainbow independent sets in certain classes of graphs

Ron Aharoni, Joseph Briggs, Jinha Kim +1

For a given class of graphs and given integers , let be the minimal number such that every independent -sets in any graph be…