Ravi P Kumar

activity

20172024

collaborators

3 papers

math.CO2024

Roman domination number of zero-divisor graphs over commutative rings

Ravindra Kumar, Om Prakash

For a graph $G = (V, E)$ , a Roman dominating function is a map $f : V \to {0, 1, 2}$ satisfies the property that if $f (v) = 0$ , then $v$ must have adjacent to at least one…

math.CO2018

Pancyclic zero divisor graph over the ring $Z_{n} [i]$

Ravindra Kumar, Om Prakash

Let $Γ (Z_{n} [i])$ be the zero divisor graph over the ring $Z_{n} [i]$ . In this article, we study pancyclic properties of $Γ (Z_{n} [i])$ and $\overline{Γ(\mathbb{…

math.CO2017

Divisor graph of complement of Gamma(R)

Ravindra Kumar, Om Prakash

Let overline{Γ(R)} be the complement of zero divisor graph of a finite commutative ring R. In this article, we have provided the answer of the question (ii) raised by Osba and Alka…

Roman domination number of zero-divisor graphs over commutative rings

Pancyclic zero divisor graph over the ring Zn​[i]

Divisor graph of complement of Gamma(R)

Pancyclic zero divisor graph over the ring $Z_{n} [i]$