A Map Coloring Method  

作　　者：Shijun Han Shijun Han(Agricultural Bank of China Puyang Branch, Puyang, China)

机构地区：[1]Agricultural Bank of China Puyang Branch, Puyang, China

出　　处：《Journal of Applied Mathematics and Physics》2023年第4期1200-1208,共9页应用数学与应用物理（英文）

摘　　要：Different vertices are colored in a plan. Adjacent vertices are colored dif-ferently from nonadjacent vertices, which are colored the same color. One color is used for a single point, two colors are used for points without a loop, and a maximum of four colors are used for points with a loop. A maximum of four colors are used to color all points. .Different vertices are colored in a plan. Adjacent vertices are colored dif-ferently from nonadjacent vertices, which are colored the same color. One color is used for a single point, two colors are used for points without a loop, and a maximum of four colors are used for points with a loop. A maximum of four colors are used to color all points. .

关 键 词：MAP Four Colors Four Colors Conjecture Graph Theory 

分 类 号：O15[理学—数学]