All Quadrilateral-Wheel Planar Ramsey Numbers
All Quadrilateral-Wheel Planar Ramsey Numbers
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DOI:
10.1007/s00373-017-1759-6
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发表时间:
2017-03
影响因子:
0.7
通讯作者:
Yaojun Chen;Z. Miao;Guofei Zhou
中科院分区:
文献类型:
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作者:
Yaojun Chen;Z. Miao;Guofei Zhou
For two given graphsand, the planar Ramsey numberis the smallest integernsuch that every planar graphGonnvertices either contains a copy of, or its complement contains a copy of. Letdenote a cycle of lengthlanda wheel of order. A quadrilateral is a. A graph is called-free if it has noanddenotes the maximum values of the minimum degrees in all-free planar graphs of ordern. In this paper, we first show thatif,ifand, andotherwise. Based on this result, it is shown that, whereif,ifand, andotherwise.