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发表于 2025-3-21 18:24:57
书目名称Mathematical Concepts in Organic Chemistry影响因子(影响力)<br> http://impactfactor.cn/if/?ISSN=BK0626048<br><br> <br><br>书目名称Mathematical Concepts in Organic Chemistry影响因子(影响力)学科排名<br> http://impactfactor.cn/ifr/?ISSN=BK0626048<br><br> <br><br>书目名称Mathematical Concepts in Organic Chemistry网络公开度<br> http://impactfactor.cn/at/?ISSN=BK0626048<br><br> <br><br>书目名称Mathematical Concepts in Organic Chemistry网络公开度学科排名<br> http://impactfactor.cn/atr/?ISSN=BK0626048<br><br> <br><br>书目名称Mathematical Concepts in Organic Chemistry被引频次<br> http://impactfactor.cn/tc/?ISSN=BK0626048<br><br> <br><br>书目名称Mathematical Concepts in Organic Chemistry被引频次学科排名<br> http://impactfactor.cn/tcr/?ISSN=BK0626048<br><br> <br><br>书目名称Mathematical Concepts in Organic Chemistry年度引用<br> http://impactfactor.cn/ii/?ISSN=BK0626048<br><br> <br><br>书目名称Mathematical Concepts in Organic Chemistry年度引用学科排名<br> http://impactfactor.cn/iir/?ISSN=BK0626048<br><br> <br><br>书目名称Mathematical Concepts in Organic Chemistry读者反馈<br> http://impactfactor.cn/5y/?ISSN=BK0626048<br><br> <br><br>书目名称Mathematical Concepts in Organic Chemistry读者反馈学科排名<br> http://impactfactor.cn/5yr/?ISSN=BK0626048<br><br> <br><br>
不容置疑
发表于 2025-3-21 23:22:13
Some Interrelations between Symmetry and Automorphism Groupsatoms about their mean positions are discussed in terms of . (see paragraph 8.4.3). This concept begins to break down when an internal degree of freedom (e.g. the torsion of a methyl group) becomes fully excited. As the shall show later, automorphism groups of the molecular graph are well-suited to treat the symmetry in non-rigid molecules.
Sinus-Rhythm
发表于 2025-3-22 02:21:37
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欢呼
发表于 2025-3-22 05:48:41
Fundamentals of Graph Theoryf molecular graphs. The present chapter will, finally, provide a precise mathematical characterization of a graph. We shall list here a number of additional graph-theoretical definitions and mention a few basic properties of graphs.
最初
发表于 2025-3-22 12:41:17
Graph Theory and Molecular Orbitalsmolecules. The wave function for a .-electron is presented in the LCAO form . where {.> symbolizes a .-vorbital located on the .-th atom of the conjugated molecule, and the summation goes over all . atoms which participate in the conjugation.
财政
发表于 2025-3-22 14:37:09
Topological Indicesthe information contained in the molecular graph into a numerical characteristic. Every number which is uniquely determined by a graph is called a graph invariant. Those invariants of molecular graphs which are used for structure-property or structure-activity correlations are usually called topological indices (of the corresponding molecule).
尾随
发表于 2025-3-22 17:08:24
Topological Aspects in ChemistrySince the time of ., chemists are used to thinking about molecules as geometric objects in which atoms have a certain spatial arrangement. The geometric parameters of molecules (interatomic distances, bond angles, dihedral angles, etc.) can be measured with a rather high degree of accuracy and are indeed known in a considerable number of cases.
上釉彩
发表于 2025-3-22 23:54:17
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emission
发表于 2025-3-23 03:40:47
Special Molecular GraphsIn graph theory a connected acyclic graph is called a tree. Hence we may say that the topology of acyclic molecules is represented by trees; the essential topological properties of acyclic molecules coincide with those of trees. In the following we shall get acquainted with the basic properties of trees.
Arresting
发表于 2025-3-23 06:55:37
Fundamentals of Group TheoryGroups are sets of elements amended with a combination law that satisfies certain conditions (axioms).