scholarly journals Star-rainbow coloring in some corona product graphs

2020 ◽  
Vol 1597 ◽  
pp. 012056
Author(s):  
Kulkarni Sunita Jagannatharao ◽  
R Murali
2019 ◽  
Vol 7 (1) ◽  
pp. 127-131 ◽  
Author(s):  
Kulkarni Sunita Jagannatharao ◽  
R. Murali

2011 ◽  
Vol 61 (9) ◽  
pp. 2793-2798 ◽  
Author(s):  
I.G. Yero ◽  
D. Kuziak ◽  
J.A. Rodríguez-Velázquez

2013 ◽  
Vol 161 (7-8) ◽  
pp. 1022-1027 ◽  
Author(s):  
Dorota Kuziak ◽  
Ismael G. Yero ◽  
Juan A. Rodríguez-Velázquez

Filomat ◽  
2015 ◽  
Vol 29 (8) ◽  
pp. 1781-1788 ◽  
Author(s):  
Ismael Yero ◽  
Juan Rodríguez-Velázquez

A set of vertices S of a graph G is a geodetic set of G if every vertex v ? S lies on a shortest path between two vertices of S. The minimum cardinality of a geodetic set of G is the geodetic number of G and it is denoted by 1(G). A Steiner set of G is a set of vertices W of G such that every vertex of G belongs to the set of vertices of a connected subgraph of minimum size containing the vertices of W. The minimum cardinality of a Steiner set of G is the Steiner number of G and it is denoted by s(G). Let G and H be two graphs and let n be the order of G. The corona product G ? H is defined as the graph obtained from G and H by taking one copy of G and n copies of H and joining by an edge each vertex from the ith-copy of H to the ith-vertex of G. We study the geodetic number and the Steiner number of corona product graphs. We show that if G is a connected graph of order n ? 2 and H is a non complete graph, then g(G ? H) ? s(G ? H), which partially solve the open problem presented in [Discrete Mathematics 280 (2004) 259-263] related to characterize families of graphs G satisfying that g(G) ? s(G).


2015 ◽  
Vol 39 (S1) ◽  
pp. 157-173 ◽  
Author(s):  
Juan A. Rodríguez-Velázquez ◽  
Gabriel A. Barragán-Ramírez ◽  
Carlos García Gómez

2021 ◽  
Vol 10 (3) ◽  
pp. 1259-1271
Author(s):  
I.J. Gogoi ◽  
B. Phukan ◽  
A. Pegu ◽  
A. Bharali

2016 ◽  
Vol 41 (3) ◽  
pp. 1541-1560 ◽  
Author(s):  
Yunior Ramírez-Cruz ◽  
Alejandro Estrada-Moreno ◽  
Juan A. Rodríguez-Velázquez

2021 ◽  
Vol 1836 (1) ◽  
pp. 012020
Author(s):  
Ika Hesti Agustin ◽  
Dafik ◽  
Rosanita Nisviasari ◽  
Ridho Alfarisi ◽  
Marsidi

2018 ◽  
Vol 22 (3) ◽  
pp. 20-26
Author(s):  
Dafik Dafik ◽  
I.H. Agustin ◽  
D.A.R. Wardanai ◽  
E.Y. Kurniawati ◽  
R. Alfarisi

2021 ◽  
Vol 40 (2) ◽  
pp. 385-398
Author(s):  
Elias John Thomas ◽  
Ullas Chandran S. V.

An independent set S of vertices in a graph G is an independent position set if no three vertices of S lie on a common geodesic. An independent position set of maximum size is an ip-set of G. The cardinality of an ip-set is the independent position number, denoted by ip(G). In this paper, we introduce and study the independent position number of a graph. Certain general properties of these concepts are discussed. Graphs of order n having the independent position number 1 or n − 1 are characterized. Bounds for the independent position number of Cartesian and Lexicographic product graphs are determined and the exact value for Corona product graphs are obtained. Finally, some realization results are proved to show that there is no general relationship between independent position sets and other related graph invariants.


Sign in / Sign up

Export Citation Format

Share Document