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IEICE TRANSACTIONS on Fundamentals

The List Coloring Reconfiguration Problem for Bounded Pathwidth Graphs

Tatsuhiko HATANAKA, Takehiro ITO, Xiao ZHOU

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Summary :

We study the problem of transforming one list (vertex) coloring of a graph into another list coloring by changing only one vertex color assignment at a time, while at all times maintaining a list coloring, given a list of allowed colors for each vertex. This problem is known to be PSPACE-complete for bipartite planar graphs. In this paper, we first show that the problem remains PSPACE-complete even for bipartite series-parallel graphs, which form a proper subclass of bipartite planar graphs. We note that our reduction indeed shows the PSPACE-completeness for graphs with pathwidth two, and it can be extended for threshold graphs. In contrast, we give a polynomial-time algorithm to solve the problem for graphs with pathwidth one. Thus, this paper gives sharp analyses of the problem with respect to pathwidth.

Publication
IEICE TRANSACTIONS on Fundamentals Vol.E98-A No.6 pp.1168-1178
Publication Date
2015/06/01
Publicized
Online ISSN
1745-1337
DOI
10.1587/transfun.E98.A.1168
Type of Manuscript
Special Section PAPER (Special Section on Discrete Mathematics and Its Applications)
Category

Authors

Tatsuhiko HATANAKA
  Tohoku University
Takehiro ITO
  Tohoku University
Xiao ZHOU
  Tohoku University

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