collaborators

8 papers

math.CO2026

Degree-choosability of proper conflict-free list coloring of sparse graphs

Masaki Kashima, Riste Škrekovski, Rongxing Xu

Given a graph and a mapping , an -list assignment of is a function that maps each to a set of at least colors. For an -list…

math.CO2025

A note on the number of non-cycle components in a pseudo 2-factor of graphs

Masaki Kashima

A pseudo 2-factor of a graph is a spanning subgraph such that each component is , , or a cycle. This notion was introduced by Bekkai and Kouider in 2009, where they showe…

math.CO2025

Remarks on proper conflict-free degree-choosability of graphs with prescribed degeneracy

Masaki Kashima, Riste Škrekovski, Rongxing Xu

A proper coloring of is called a proper conflict-free coloring of if for every non-isolated vertex of , there is a color such that

math.CO2025

Proper conflict-free degree-choosability of outerplanar graphs

Masaki Kashima, Riste Škrekovski, Rongxing Xu

A proper coloring of is called a proper conflict-free coloring of if for every non-isolated vertex of , there is a color such that

math.CO2025

Results on proper conflict-free list coloring of graphs

Masaki Kashima, Riste Škrekovski, Rongxing Xu

Given a graph and a mapping , an -list assignment of is a function that maps each to a set of at least colors. For an -list…

math.CO2025

Odd coloring of -trees

Masaki Kashima, Kenta Ozeki

An odd coloring of a graph is a proper coloring such that every non-isolated vertex has a color that appears at an odd number of its neighbors. This notion was introduced by Petrše…