Browsing by Author "Afifa Riaz"

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    Irregularity indices of rhombus type silicate and oxide networks
    (UMT Lahore, 2020) Afifa Riaz
    Let c¸ = (v(c¸)e(c¸)) be a graph having vertex set v(c¸) and edge set e(c¸). Topological indices are used to review the assorted conjoining properties of the graphs and it allow a mathematical language to learn molecular structures. Irregularity index is a topological invariant it(c¸) of a graph c¸, that remains greater or equal to zero always. Moreover, it(c¸) = 0, if c¸ is a regular graph. Silicates are the most convoluted, engrossing and wide-range class of minerals and oxide is a chemical compound that contains at least one oxygen atom. In the silicates and oxides networks, atoms are represented by vertices or nodes and bondings between then showed by edges. In this thesis, we will compute various irregularity indices, namely albert index al(g) and degree-variance var(g) etc, of the oxide and silicate networks in the terms of their orders and size.