支票
发表于 2025-3-21 18:25:55
书目名称Kekulé Structures in Benzenoid Hydrocarbons影响因子(影响力)<br> http://impactfactor.cn/if/?ISSN=BK0542367<br><br> <br><br>书目名称Kekulé Structures in Benzenoid Hydrocarbons影响因子(影响力)学科排名<br> http://impactfactor.cn/ifr/?ISSN=BK0542367<br><br> <br><br>书目名称Kekulé Structures in Benzenoid Hydrocarbons网络公开度<br> http://impactfactor.cn/at/?ISSN=BK0542367<br><br> <br><br>书目名称Kekulé Structures in Benzenoid Hydrocarbons网络公开度学科排名<br> http://impactfactor.cn/atr/?ISSN=BK0542367<br><br> <br><br>书目名称Kekulé Structures in Benzenoid Hydrocarbons被引频次<br> http://impactfactor.cn/tc/?ISSN=BK0542367<br><br> <br><br>书目名称Kekulé Structures in Benzenoid Hydrocarbons被引频次学科排名<br> http://impactfactor.cn/tcr/?ISSN=BK0542367<br><br> <br><br>书目名称Kekulé Structures in Benzenoid Hydrocarbons年度引用<br> http://impactfactor.cn/ii/?ISSN=BK0542367<br><br> <br><br>书目名称Kekulé Structures in Benzenoid Hydrocarbons年度引用学科排名<br> http://impactfactor.cn/iir/?ISSN=BK0542367<br><br> <br><br>书目名称Kekulé Structures in Benzenoid Hydrocarbons读者反馈<br> http://impactfactor.cn/5y/?ISSN=BK0542367<br><br> <br><br>书目名称Kekulé Structures in Benzenoid Hydrocarbons读者反馈学科排名<br> http://impactfactor.cn/5yr/?ISSN=BK0542367<br><br> <br><br>
coagulate
发表于 2025-3-21 22:34:11
,Kekulé Structures and their Numbers: General Results,n on generally valid statements, i.e. statements which hold for all benzenoids or for all Kekuléan benzenoids or (at least) for all catacondensed systems. We are, however, not going to list here the numerous known relations for ., which apply to more general classes of graphs (namely both benzenoid
令人心醉
发表于 2025-3-22 03:31:28
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Guaff豪情痛饮
发表于 2025-3-22 06:57:30
Classes of Basic Benzenoids (I),small parameters they degenerate to catacondensed systems. Some benzenoids related to those of the main classes are also treated. They are also basic in general, but may degenerate to composite or catacondensed systems, and even disconnected. Trivial cases of no hexagons with .=1 are also encountere
metropolitan
发表于 2025-3-22 08:54:46
Regular Three-, Four- and Five-Tier Strips,. The 3-tier strips are relatively simple and well known (Gordon and Davison 1952; Yen 1971; Cyvin 1986d). A systematic study of 4-tier strips has been performed more recently by Cyvin (1986d). Before that some studies of 5-tier strips had been published (Gordon and Davison 1952; Yen 1971; Ohkami an
asthma
发表于 2025-3-22 16:41:48
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diskitis
发表于 2025-3-22 19:39:42
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重力
发表于 2025-3-23 00:18:26
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谁在削木头
发表于 2025-3-23 02:26:53
Benzenoids with Repeated Units,ins (see, e.g. Fig. 4.9 or CHART 6-II) may be considered as (trivial) benzenoids with repeated units. A less trivial example is the single chain with equal segments in a zigzag arrangement (CHART 6-II). Several typical examples are found among the all-benzenoid classes, both catacondensed (Section 6
过多
发表于 2025-3-23 05:32:16
,Distribution of ,, and Kekulé Structure Statistics,he other hand it was known at that time that infinitely many benzenoids have .=9. Until quite recently the only known theorem about this question was: If .{B} = 2, then B = . (Gutman 1983). In other words, there exists one benzenoid with .=2. Furthermore, it was conjectured that there is one benzeno