学术论文

      New Bounds for Zagreb Eccentricity Indices

      <span>The Zagrebeccentricity indices are the eccentricity version of the classical Zagrebindices. The first Zagrebeccentricity index (<i>E</i><sub>1</sub>(<i>G</i>)) is defined as sum of squares of the eccentricities of the vertices and the second Zagrebeccentricity index (<i>E</i><sub>2</sub>(<i>G</i>)) is equal to sum of product of the eccentricities of the adjacent vertices. In this paper we give some new upper and lower bounds for first and second Zagreb eccentricity indices.</span><span></span>
      期刊: Open Journal of Discrete Mathematics
      年,卷(期): 2013, 03(01)