“four-color problem”的概念、定义、翻译、参考文献-科学参考

单词	four-color problem
释义	four-color problem [¦fȯr `kǝl·ǝr ´präb·lǝm] ^MATHEMATICS The problem of proving the statement that, given any map in the plane, it is possible to color the regions with four colors so that any two regions with a common boundary have different colors.
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