CP6
Graph Theory: Coloring

10:00 Defective Coloring Revisited

Lenore J. Cowen, Johns Hopkins University; Wayne Goddard, University of Natal, South Africa; and C. Esther Jesurum, Massachusetts Institute of Technology

10:20 Choice Number of Kn,n with Some Edges Removed

Thomas Hull, University of Rhode Island

10:40 Chromatic Number of Distance Graphs and Channel Assignment Problem

Daphne D.-F. Liu, California State University, Los Angeles

11:00 A Coloring Problem for Weighted Graphs

D. J. Guan and Xuding Zhu, National Sun Yat-sen University, Taiwan, Republic of China

11:20 Color-Critical Graphs With Few Edges

Alexandr V. Kostochka, Institute of Mathematics, Russia; and Michael Stiebitz, Technische Universitat Ilmenau, Germany

11:40 A Triangle-Free Circle Graph with Chromatic Number 5

Alexander A. Ageev, Institute of Mathematics, Russia

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