The spectral graph theory explores connections between combinatorial features of graphs
and algebraic properties of associated matrices. The neighborhood inverse sum indeg (NI) …

A topological index is a number derived from a molecular structure (ie, a graph) that
represents the fundamental structural characteristics of a suggested molecule. Various …

Let R be a commutative ring with all non-zero zero divisors Z∗(R) of R. Then Γ (R) is said to
be a zero divisor graph if and only if a· b= 0 where a, b∈ V (Γ (R))= Z∗(R) and (a, b)∈ E (Γ …

Assume that G is a finite group. The power graph P (G) of G is a graph in which G is its node
set, where two different elements are connected by an edge whenever one of them is a …

A topological index is a numeric quantity associated with a chemical structure that attempts
to link the chemical structure to various physicochemical properties, chemical reactivity, or …

Let n≥ 1 be a fixed integer. The main objective of this paper is to compute some topological
indices and coindices that are related to the graph complement of the prime ideal sum (PIS) …

ABSTRACT A combinatorial approach is given to compute bases for eigenspaces of zero-
divisor graphs of finite Boolean rings. A commutative monoid S of graphs is shown to contain …

Let ℛ be commutative ring and Z∗(ℛ) be the set of all non-zero zero divisors of ℛ. Then Γ (ℛ)
is said to be the zero divisor graph if and only if a⋅ b= 0 where a, b∈ V (Γ (ℛ)) and (a, b)∈ E …