Comparing momenta and pi-electron energy of benzenoid molecules
نویسندگان
چکیده
LetGbe agraph associatedwith the hexagonal systemof a benzenoidhydrocarbon.Let 1 · · · n be the set of eigenvalues of the adjacency matrix ofG and consider the momentaMk= ∑n i=1 ki for k even.We show the lower boundM2 q (MrMs) −1/2 E (G) for the total -electron energy ofG, where q, r, s are even integers with 4q = r + s + 2. Particular cases of this bound improve the well-known McClelland’s inequalities. © 2005 Elsevier B.V. All rights reserved.
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ورودعنوان ژورنال:
- Discrete Mathematics
دوره 302 شماره
صفحات -
تاریخ انتشار 2005