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math.CO2008
A note on 3-colorable plane graphs without 5- and 7-cycles
Baogang Xu
Borodin et al figured out a gap of the paper published at J. Combinatorial Theory Ser. B (Vol.96 (2006) 958--963), and gave a new proof with the similar technique. The purpose of t…
math.CO2006★ 4 cited
A Note on (3,1)-Choosable Toroidal Graphs
Baogang Xu, Qinglin Yu
An -coloring is a mapping that assigns a color to each vertex such that at most neighbors of receive colore . A graph is calle…