Results 1 to 10 of about 41,221 (298)

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   +4 more sources

The n-th Power Signed Graphs-II [PDF]

open access: yes, 2010
For standard terminology and notion in graph theory we refer the reader to Harary [6]; the non-standard will be given in this paper as and when required.
Reddyy, P. Siva Kota   +2 more
core   +1 more source

Smarandache Directionally n-Signed Graphs — A Survey [PDF]

open access: yes, 2013
For graph theory terminology and notation in this paper we follow the book [3]. All graphs considered here are finite and simple.
P. Siva Kota Reddy, Reddy, P.Siva Kota
core   +1 more source

Negation Switching Equivalence in Signed Graphs [PDF]

open access: yes, 2010
Unless mentioned or defined otherwise, for all terminology and notion in graph theory the reader is refer to [8].
Reddy, Siva Kota
core   +1 more source

Weak signed Roman domination in graphs [PDF]

open access: yesCommunications in Combinatorics and Optimization, 2020
A weak signed Roman dominating function (WSRDF) of a graph $G$ with vertex set $V(G)$ is defined as a function $f:V(G)\rightarrow\{-1,1,2\}$ having the property that $\sum_{x\in N[v]}f(x)\ge 1$ for each $v\in V(G)$, where $N[v]$ is the closed ...
Lutz Volkmann
doaj   +1 more source

Chromatic Polynomials of Signed Book Graphs

open access: yesTheory and Applications of Graphs, 2022
For $m \geq 3$ and $n \geq 1$, the $m$-cycle \textit{book graph} $B(m,n)$ consists of $n$ copies of the cycle $C_m$ with one common edge. In this paper, we prove that (a) the number of switching non-isomorphic signed $B(m,n)$ is $n+1$, and (b) the ...
Deepak Sehrawat, Bikash Bhattacharjya
doaj   +1 more source

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

A Note on Path Signed Digraphs [PDF]

open access: yes, 2010
The concept of a line signed digraph is generalized to that of a path signed ...
S. Vijay   +5 more
core   +1 more source

Coloring problem of signed interval graphs [PDF]

open access: yesTransactions on Combinatorics, 2019
A signed graph $(G,\sigma)$ is a graph‎ ‎together with an assignment of signs $\{+,-\}$ to its edges where‎ ‎$\sigma$ is the subset of its negative edges‎.
Farzaneh Ramezani
doaj   +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

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