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    STUDIA CHEMIA - Issue no. 2 / 2015  
         
  Article:   COMPUTING THE ANTI-KEKULÉ NUMBER OF CERTAIN NANOTUBES AND NANOCONES.

Authors:  . 		 
       
         
  Abstract:   Let G(V,E) be a connected graph. A set M subset of E is called a matching if no two edges in M have a common end-vertex. A matching M in G is perfect if every vertex of G is incident with an edge in M. The perfect matchings correspond to Kekulé structures which play an important role in the analysis of resonance energy and stability of hydrocarbons. The anti-Kekulé number of a graph G, denoted as ak(G), is the smallest number of edges which must be removed from a connected graph G with a perfect matching, such that the remaining graph stay connected and contains no perfect matching.
In this paper, we calculate the anti-Kekulé number of TUC4C8(S)[p,q] nanotube, TUC4C8(S)[p,q] nanotori for all positive integers p, q and CNC2k-1[n] nanocones for all positive integersk  p, q and CNC2k-1[n] nanocones for all positive integers k and n.

Keywords: Perfect matching, Anti-Kekulé number, Nanotubes, Nanocones
  
         
     
         
         
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