From the G(a,b,c) matrix at least 20 groups of topological indices can be derived. Each of these ... more From the G(a,b,c) matrix at least 20 groups of topological indices can be derived. Each of these groups contains an infinite number of possible indices. Some of these indices correlate by abs(r)max> 0.99, and a number of them by abs(r)max> 0.9 with particular tested 29 resp. 31 physicochemical properties of alkanes. Therefore, their use in QSPR/QSAR models is recommended. The indices of these groups are not useful to predict the physicochemical
The atom contribution approach, the bond contribution approach, the contribution of terminal or i... more The atom contribution approach, the bond contribution approach, the contribution of terminal or interior atoms or bonds approaches to their values do not seem to be viable approaches to perform the structural interpretation of topological indices and physicochemical properties. On the other hand, the approach of structural interpretation using the structural features like the size of the molecule, the number of branches, the position of branches, the separation between them, the type of branches, and the type of the branched structure is generally applicable.
From the G(a,b,c) matrix at least 20 groups of topological indices can be derived. Each of these ... more From the G(a,b,c) matrix at least 20 groups of topological indices can be derived. Each of these groups contains an infinite number of possible indices. Some of these indices correlate by abs(r)max> 0.99, and a number of them by abs(r)max> 0.9 with particular tested 29 resp. 31 physicochemical properties of alkanes. Therefore, their use in QSPR/QSAR models is recommended. The indices of these groups are not useful to predict the physicochemical
The atom contribution approach, the bond contribution approach, the contribution of terminal or i... more The atom contribution approach, the bond contribution approach, the contribution of terminal or interior atoms or bonds approaches to their values do not seem to be viable approaches to perform the structural interpretation of topological indices and physicochemical properties. On the other hand, the approach of structural interpretation using the structural features like the size of the molecule, the number of branches, the position of branches, the separation between them, the type of branches, and the type of the branched structure is generally applicable.
Origin and development of humankind, development of Europeans, inadequacy of some current explana... more Origin and development of humankind, development of Europeans, inadequacy of some current explanations in view of novel data
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