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单词
four color theorem
释义
four color theorem
Encyclopedia
理学
旅行售货商问题
释
four color theorem
四色定理
设图G是一个平面图，图G的面染色（face coloring）是从G的面集合到某个给定颜色集合的映射。进一步，如果图G的某个面染色的颜色集合中有k种颜色，那么称这个面染色为k-面染色（k-face coloring）。图G的k-面染色称为正常k-面染色（proper k-face coloring），如果具有公共边的面染不同颜色，此时称图G是k-面可染的（proper k-face colorable）。四色定理的内容如下：每个无割边的平面图都是4-面可染的。
Mathematics
＞组合数学、组合设计与图论＞图论＞释义
four-color theorem
四色定理
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high speed imaging
high speed imaging sensor
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high-speed on-off valve
high speed packet access，HSPA
high-speed passenger railway network
high speed photodetector response time standard
high speed photography
high-speed photography
high-speed photography in water -immersion system
high-speed photography or high-speed imaging
high speed photography technology
high-speed photometer
high-speed photometry
high-speed physics and chemistry
high speed rail economy
high speed railway
high-speed railway bridge
high-speed railway station and terminal
high-speed railway station zone
high-speed railway terminal
high-speed railway transportation
high-speed rotating mirror scanning and frame cameras
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