[圖論] 平面圖的證明
Let G be a planar graph
show that G contains at least n/2 vertices of degree at most 11.
問題在於
我可以證明出G裡面至少有一半以上的點的degree是小於等於12
但是卻不知道怎麼證明小於等於11
麻煩能不能有人給我個hint?
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※ 編輯: simonjoker 來自: 140.114.79.107 (10/10 21:19)
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