Results 11 to 20 of about 928,791 (254)

The common minimal dominating signed graph [PDF]

open access: yesTransactions on Combinatorics, 2012
In this paper, we define the common minimal dominating signedgraph of a given signed graph and offer a structuralcharacterization of common minimal dominating signed graphs. Inthe sequel, we also obtained switching equivalencecharacterizations: $overline{
P. Siva Reddy, B. Prashanth
doaj   +1 more source

Edges and vertices in a unique signed circle in a signed graph

open access: yesAKCE International Journal of Graphs and Combinatorics, 2017
We examine the conditions under which a signed graph contains an edge or a vertex that is contained in a unique negative circle or a unique positive circle.
Richard Behr
doaj   +2 more sources

Computing the determinant of a signed graph

open access: yesOpen Mathematics
A signed graph is a simple graph in which every edge has a positive or negative sign. In this article, we employ several algebraic techniques to compute the determinant of a signed graph in terms of the spectrum of a vertex-deleted subgraph.
Alshamary Bader, Stanić Zoran
doaj   +2 more sources

Application of signed graph in amino acid network [PDF]

open access: yesNetwork Biology
This article is aimed to construct a model related to protein structure and amino acids viz., Brandstein and Tooze's condition. To study Brandstein and Tooze's condition we have considered signed graph in amino acids.
Adil Akhtar, Nasrin Irshad Hussain
doaj   +2 more sources

Total graph of a signed graph [PDF]

open access: yes, 2022
The total graph is built by joining the graph to its line graph by means of the incidences. We introduce a similar construction for signed graphs. Under two similar definitions of the line signed graph, we define the corresponding total signed graph and ...
Stanic Z.   +5 more
core   +1 more source

Total Minimal Dominating Signed Graph [PDF]

open access: yes, 2010
Cartwright and Harary considered graphs in which vertices represent persons and the edges represent symmetric dyadic relations amongst persons each of which designated as being positive or negative according to whether the nature of the relationship is ...
Reddy, Siva Kota, Vijay, S.
core   +1 more source

Singed Total Domatic Number of a Graph [PDF]

open access: yes, 2010
The maximum number of functions in a signed total dominating family on G is the signed total domatic number of G. In this paper, some properties related signed total domatic number and signed total domination number of a graph are studied and found the ...
Shailaja S. Shirkol   +2 more
core   +1 more source

The H-Line Signed Graph of a Signed Graph [PDF]

open access: yes, 2010
For standard terminology and notion in graph theory we refer the reader to Harary; the non-standard will be given in this paper as and when required.
Reddy, Siva Kota   +2 more
core   +1 more source

COMMON-EDGE SIGNED GRAPH OF A SIGNED GRAPH [PDF]

open access: yes, 2010
A Smarandachely k-signed graph (Smarandachely k-marked graph) is anordered pair....DOI : http://dx.doi.org/10.22342/jims.16.2.34.105 ...
P. Siva Kota Reddy   +2 more
core   +2 more sources

Signed Graph Equation [PDF]

open access: yes, 2009
For standard terminology and notion in graph theory we refer the reader to Harary [7]; the non-standard will be given in this paper as and when required.
Reddy, P. Siva Kota   +3 more
core   +1 more source

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