2 papers
math.CO2020
On energy ordering of vertex-disjoint bicyclic sidigraphs
Sumaira Hafeez, Rashid Farooq
The energy and iota energy of signed digraphs are respectively defined as the sum of absolute values of real parts and sum of absolute values of imaginary parts of its eigenvalues.…
math.CO2019
Inverse sum indeg energy of graphs
Sumaira Hafeez, Rashid Farooq
Suppose G is an n-vertex simple graph with vertex set {v1,..., vn} and d(i), i = 1,..., n, is the degree of vertex vi in G. The ISI matrix S(G) = [sij] of G is a square matrix of o…