activity
20212026
most citedTight bound for independent domination of cubic graphs without -cycles

10 citations · 16 across the 5 of their papers we have counts for

collaborators

8 papers

math.CO2026

Every cubic graph has four total dominating sets covering each vertex at most twice

Hyemin Kwon, Boram Park, Yoshio Sano

In 2018, Goddard and Henning conjectured that every cubic graph has four total dominating sets covering each vertex at most twice, and asked the analogous question for transversals…

math.CO2026

Det-extremal cubic graphs and the total domatic number

Myungho Choi, Hyemin Kwon, Boram Park

A graph is det-extremal if for its adjacency matrix . Det-extremal cubic bipartite graphs arise in the study of Pólya's permane…

math.CO2024

The forb-flex method for odd coloring and proper conflict-free coloring of planar graphs

James Anderson, Herman Chau, Eun-Kyung Cho +6

We introduce a new tool useful for greedy coloring, which we call the forb-flex method, and apply it to odd coloring and proper conflict-free coloring of planar graphs. The odd chr…

math.CO2024

Strong odd coloring of sparse graphs

Hyemin Kwon, Boram Park

An odd coloring of a graph is a proper coloring of such that for every non-isolated vertex , there is a color appearing an odd number of times in . Odd coloring…

math.CO2023

Brooks-type theorems for relaxations of square colorings

Eun-Kyung Cho, Ilkyoo Choi, Hyemin Kwon +1

The following relaxation of proper coloring the square of a graph was recently introduced: for a positive integer , the proper -conflict-free chromatic number of a graph ,…

math.CO2022★ 5 cited

Proper conflict-free coloring of sparse graphs

Eun-Kyung Cho, Ilkyoo Choi, Hyemin Kwon +1

A {\it proper conflict-free -coloring} of a graph is a proper -coloring such that each non-isolated vertex has a color appearing exactly once on its neighborhood. This notion…

math.CO2022★ 1 cited

Odd coloring of sparse graphs and planar graphs

Eun-Kyung Cho, Ilkyoo Choi, Hyemin Kwon +1

An {\it odd -coloring} of a graph is a proper -coloring such that each non-isolated vertex has a color appearing an odd number of times on its neighborhood. This concept was…

math.CO2021★ 10 cited

Tight bound for independent domination of cubic graphs without -cycles

Eun-Kyung Cho, Ilkyoo Choi, Hyemin Kwon +1

Given a graph , a dominating set of is a set of vertices such that each vertex not in has a neighbor in . The domination number of , denoted , is the min…