Abstract

For two given graphs G1G_1 and G2G_2, the Ramsey number R(G1,G2)R(G_1,G_2) is the least integer rr such that for every graph GG on rr vertices, either GG contains a G1G_1 or Gˉ\bar{G} contains a G2G_2. In this note, we determined the Ramsey number R(K1,n,Wm)R(K_{1,n},W_m) for even mm with n+2≤m≤2n−2n+2\leq m\leq 2n-2, where WmW_m is the wheel on m+1m+1 vertices, i.e., the graph obtained from a cycle CmC_m by adding a vertex vv adjacent to all vertices of the CmC_m.

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