Volume 6, Issue 1

 

ارسال های اخیر

  • A new approach to compute acyclic chromatic index of certain chemical structures 

    RAJASINGH, INDRA؛ R, SUNDARA؛ D, PAUL (University of Kashan, 2015-03-01)
    An acyclic edge coloring of a graph is a proper edge coloring such that there are no bichromatic cycles. The acyclic chromatic index of a graph $G$ denoted by $chi_a '(G)$ is the minimum number $k$ such that there is an ...

  • Dynamical behavior and synchronization of chaotic chemical reactors model 

    Kheiri, Hossein؛ Naderi, Bashir (University of Kashan, 2015-03-01)
    In this paper, we discuss the dynamical properties of a chemical reactor model including Lyapunov exponents, bifurcation, stability of equilibrium and chaotic attractors as well as necessary conditions for this system to ...

  • The matching interdiction problem in dendrimers 

    Shirdel, Gholam Hassan؛ Kahkeshani, Nasrin (University of Kashan, 2015-03-01)
    The purpose of the matching interdiction problem in a weighted graph is to find two vertices such that the weight of the maximum matching in the graph without these vertices is minimized. An approximate solution for this ...

  • Relationship between topological indices and thermodynamic properties and of the monocarboxylic acids applications in QSPR 

    Shafiei, Fatemeh (University of Kashan, 2015-03-01)
    Topological indices are the numerical value associated with chemical constitution purporting for correlation of chemical structure with various physical properties, chemical reactivity or biological activity. Graph theory ...

  • On the distance based indices of H-phenylenic nanotorus 

    Heydari, Abbas (University of Kashan, 2015-03-01)
    Let G be a connected simple (molecular) graph. The distance d(u, v) between two vertices u and v of G is equal to the length of a shortest path that connects u and v. In this paper we compute some distance based topological ...

  • On the harmonic index and harmonic polynomial of Caterpillars with diameter four 

    Iranmanesh, Mohammadali؛ Saheli, Mahboubeh (University of Kashan, 2015-03-01)
    The harmonic index H(G) , of a graph G is defined as the sum of weights 2/(deg(u)+deg(v)) of all edges in E(G), where deg (u) denotes the degree of a vertex u in V(G). In this paper we define the harmonic polynomial of G. ...

  • Bounds for the Co-PI index of a graph 

    KAYA, Ezgi؛ MADEN, Ayşe Dilek (University of Kashan, 2015-03-01)
    In this paper, we present some inequalities for the Co-PI index involving the some topological indices, the number of vertices and edges, and the maximum degree. After that, we give a result for trees. In addition, we give ...