Author

Tomáš Vetrík

Department of Mathematics and Applied Mathematics, Bloemfontein 9300, University of the Free State, Bloemfontein, P. O. Box 339, 9300, South Africa

Published papers: 2
Citations: 4
Views: 675
Downloads: 256

Publications

2 papers

Open Access Research Article·pp. 101–111·Vol. 28, Issue 1Feb 2025

General Sombor index of graphs and trees

Kinkar Chandra Das, Muhammad Imran, Tomáš Vetrík

Published Online: 28 Feb 2025DOI: 10.47974/JDMSC-1918

In this paper: Topological indices such as the general Sombor index are studied because of their extensive applications. For c, g ∈ ℝ, the general Sombor index for a graph H is SOc,g(H) = ∑vw∈E(H) ([dH(v)]c +[dH(w)c...

Abstract References Full Text PDF (222 KB)Views: 383Downloads: 147Citations: 4

Open Access Research Article·pp. 1–10·Vol. 26, Issue 1Feb 2021

On the partition dimension of directed circulant graphs

Elizabeth C. M. Maritz, Tomáš Vetrík

Published Online: 04 Feb 2021DOI: 10.1080/09720529.2019.1694739

In this paper: The directed circulant graph Cn(1, 2, … , t) consists of the vertices v0 , v1 , … , vn-1 and edges directed from vi to vi+j for every i = 0, 1, … , n – 1, and j = 1, 2, … , t, where 1 ≤ t ≤ n – 1, the...

Abstract References Full Text PDF (184 KB)Views: 292Downloads: 109Citations: 0