Abstract
This paper proves that if $G$ is a triangle-free planar graph in which no 4-cycle is adjacent to a 4-cycle or a 5-cycle, then $G$ is on-line 3-choosable.
Citation
Ting-Pang Chang. Xuding Zhu. "ON-LINE 3-CHOOSABLE PLANAR GRAPHS." Taiwanese J. Math. 16 (2) 511 - 519, 2012. https://doi.org/10.11650/twjm/1500406598
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