Volume 8, Issue 2

 

ارسال های اخیر

  • A survey on symmetric division degree index 

    Amraei, Najaf (Shahid Rajaee Teacher Training University, 2018-12-01)
    The symmetric division degree (SDD) index is one the 148 discrete Adriatic indices,introduced by Vukicevi´c et al. as a remarkable predictor of total surface area of polychlorobiphenyls.The SDD index has already been proved ...

  • Spectral properties of fullerene graphs 

    Songhori, Mahin؛ Rajabi-Parsa, Mina؛ Alidehi-Ravandi, Razie (Shahid Rajaee Teacher Training University, 2018-12-01)
    Fullerenes are polyhedral molecules made of carbon atoms. These graphs have attracted much attention in the chemical and the mathematical literature. In the present paper, we investigate problems concerned with the eigenvalues ...

  • On the distance matrix of an infinite class of fullerene graphs 

    Rajabi-Parsa, Mina؛ eslampour, mohammad javad (Shahid Rajaee Teacher Training University, 2018-12-01)
    Let G be a graph, the distance d(u,v) between two vertices u and v of G is the minimumlength of the paths connecting them. The aim of this paper is computing the distance matrix of infinite familiy of fullerene graph A10n.

  • Eccentricity Based Indices for Some Classes Fence Graphs 

    Pattabiraman, K؛ Suganya, T (Shahid Rajaee Teacher Training University, 2018-12-01)
    One of the most important ideas employed in chemical graph theory is that of so-called topological indices. This is to associate a numerical value with a graph structure that often has some kind of correlation ...

  • Topological indices of some families of nanostar dendrimers 

    Siddiqui, Muhammad؛ Rehman, Najma؛ Imran, Muhammad (Shahid Rajaee Teacher Training University, 2018-12-01)
    A molecular graph is hydrogen depleted chemical structure in which vertices denote atoms and edges denote the bonds. Nanostar dendrimers, a type of chemical compound, have potential in fields such as chemistry, nanotechnology, ...

  • Atom bond connectivity temperature index of certain nanostructures 

    Kahsay, Afework؛ Narayankar, Kishori؛ Selvan, Dickson (Shahid Rajaee Teacher Training University, 2018-12-01)
    In the study of QSPR/QSAR, topological indices such as Zagreb index, Randic index, atom-bond connectivity index are exploited to estimate the bioactivity of chemical compounds. Inspired by many degree based topological ...

  • On the distance matrix of an infinite class of fullerene graphs 

    Rajabi-Parsa, Mina (Shahid Rajaee Teacher Training University, 2018-12-01)
    Let G be a graph, the distance d(u

  • Energy of graphs 

    Jalali-Rad, Maryam (Shahid Rajaee Teacher Training University, 2018-12-01)
    The energy, E(G), of a simple graph G is defined to be the sum of the absolute values of the eigen values of G. In this paper, we introduce some in-equalities of energy of graphs.

  • Computing the clar number of nanotubes and other fullerenes 

    Montoya, Juan؛ Cadavid, Laura (Shahid Rajaee Teacher Training University, 2018-12-01)
    We exhibit a polynomial time algorithm that computes the Clar number of any nanotube. This algorithm can be easily extended to one that computes the Clar number of fullerene whose pentagon-clusters are all of even size.