Sayinath Udupa N.V

activity

20242026

collaborators

3 papers

math.CO2026

The Dual-Server Domination Number of Some Graph Operations

Shrilaxmi Laxminarayana Rao, Sayinath Udupa N. V., Prathviraj N

A subset $S \subseteq V (G)$ is called a dual-server dominating set if there exists a partition $π_{S} = {R, B}$ of $S$ such that every vertex in $V (G) ∖ S$ has at least one nei…

math.CO2025

On extremal graphs with respect to the ABS index

Swathi Shetty, B. R. Rakshith, Sayinath Udupa N.

Recently, Ali et al. posed several open problems concerning extremal graphs with respect to the ABS index. These problems involve characterizing graphs that attain the maximum ABS…

math.CO2024

On the $A BS$ spectrum and energy of graphs

Swathi Shetty, B. R. Rakshith, Sayinath Udupa N.

Let $η_{1} \geq η_{2} \geq \dots \geq η_{n}$ be the eigenavalues of $A BS$ matrix. In this paper, we characterize connected graphs with $A BS$ eigenvalue $η_{n} > - 1$ . As…

The Dual-Server Domination Number of Some Graph Operations

On extremal graphs with respect to the ABS index

On the ABS spectrum and energy of graphs

On the $A BS$ spectrum and energy of graphs