Definitive 发表于 2025-3-30 09:00:00
Are Four Colors Really Enough?,hen there is the famous link between this problem and Lewis Carroll’s poem, “The Hunting of the Snark.” We’ll get to that too. After reading this chapter you might like to look at the overview , by Appel and Haken, of their proof of the Four Color Theorem, or, for a more complete treatment, see , , or .