on the general sum–connectivity co–index of graphs
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abstract
in this paper, a new molecular-structure descriptor, the general sum–connectivity co–index is considered, which generalizes the first zagreb co–index and the general sum–connectivity index of graph theory. we mainly explore the lower and upper bounds in termsof the order and size for this new invariant. additionally, the nordhaus–gaddum–type resultis also represented.
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Journal title:
iranian journal of mathematical chemistryPublisher: university of kashan
ISSN 2228-6489
volume 2
issue Issue 1 (Special Issue on the Occasion of Mircea V. Diudea's Sixtieth Birthday) 2011
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