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單一4-邊形環(huán)己烷類分子圖的l1-嵌入性

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摘要:圖的度量空間與l1-空間的某個子空間同構的圖稱為l1-嵌入的。單一4-邊形環(huán)己烷類分子圖是指嵌入到平面上恰有1個四邊形面,其他都是六邊形面,且內點度為3,邊界點度為2或3的2連通平面圖。證明了當4-邊形上只有2個相鄰3度點時,單一4-邊形環(huán)己烷類圖是l1-嵌入的,其他的都不是。

關鍵詞:環(huán)己烷類圖;l1-嵌入;l1-圖

中圖分類號:O157.5 文獻標志碼:A

本文引用格式:熊志坤,王廣富. 單一4-邊形環(huán)己烷類分子圖的l1-嵌入性[J]. 華東交通大學學報,2023,40(6):115-120.

l1-Embeddability of Mono-4-gons Cyclohexane Molecular Graphs

Xiong Zhikun,Wang Guangfu

(1. School of Science, East China Jiaotong University, Nanchang 330013, China;2.The Seventh Senior High School of Dongguan,Dongguan  523500,China;3. School of Mathematics and Information Sciences,Yantai University,Yantai  264005,China)

Abstract:A graph whose graphic metric space is isomorphic to some subspace of an l1-space is called l1-embeddable. A mono-4-gons cyclohexane molecular graph refers to a 2-connected planar graph embedded in a plane with exactly one quadrilateral face, the rest are hexagonal faces, and the inner vertices degree are 3 and the boundary vertices degree are 2 or 3. It is proved that when there are only two adjacent 3-degree vertices on the quadrilateral, the mono-4-gons cyclohexane graph is l1-embeddable, and the others are not.

Key words: the cyclohexane graph; l1-embeddability; l1-graph

Citation format:XIONG Z K,WANG G F. l1-Embeddability of mono-4-gons cyclohexane molecular graphs[J]. Journal of East China Jiaotong University,2023,40(6):115-120.

化學圖論早在18世紀下半葉被引入[1],在1758年Cullen和Black繪制的第一個化學分子的示例圖就代表了化學物質之間的相互作用。(剩余9145字)

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