We define two functions f and g on the unit interval [0, 1] to be strongly conjugate $\operatorname {iff}$ there is an order-preserving homeomorphism h of [0, 1] such that g = h -1 fh (a minor ...

We introduce the concept of common-neighborhood energy of a graph G and obtain an upper bound for ECN when G is strongly regular. We also show that ECN of several classes of graphs is less than the ...