We compute the exact maximum number of vertices in a planar graph with diameter two and maximum degree DELTA, for any DELTA greater-than-or-equal-to 8. Results for larger diameter are also mentioned.
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Mathematics and Statistics Department, Shandong Normal University, Shandong, Jinan,250014, ChinaMathematics and Statistics Department, Shandong Normal University, Shandong, Jinan,250014, China
Lou, Xiaoyuan
Sun, Lei
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Mathematics and Statistics Department, Shandong Normal University, Shandong, Jinan,250014, ChinaMathematics and Statistics Department, Shandong Normal University, Shandong, Jinan,250014, China
Sun, Lei
Zheng, Wei
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Mathematics and Statistics Department, Shandong Normal University, Shandong, Jinan,250014, ChinaMathematics and Statistics Department, Shandong Normal University, Shandong, Jinan,250014, China