Results 21 to 30 of about 5,052,226 (252)

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

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

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

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

Tulgeity of Line, Middle and Total Graph of Wheel Graph Families [PDF]

open access: yes, 2010
Tulgeity r(G) is the maximum number of disjoint, point induced, non acyclic subgraphs contained in G. In this paper one finds the tulgeity of line, middle and total graph of wheel graph, Gear graph and Helm ...
Vernold, Vivin   +2 more
core   +1 more source

-consistent and -cycle compatible dot-line signed graphs

open access: yesElectronic Notes in Discrete Mathematics, 2017
Sangita Kansal   +2 more
exaly   +3 more sources

On $bullet$-lict signed graphs $L_{bullet_c}(S)$ and $bullet$-line signed graphs $L_bullet(S)$ [PDF]

open access: yesTransactions on Combinatorics, 2016
A emph{signed graph} (or, in short, emph{sigraph}) $S=(S^u,sigma)$ consists of an underlying graph $S^u :=G=(V,E)$ and a function $sigma:E(S^u)longrightarrow {+,-}$, called the signature of $S$. A emph{marking} of $S$ is a function $mu:V(S)longrightarrow
Mukti Acharya   +2 more
doaj  

On products and line graphs of signed graphs, their eigenvalues and energy

open access: yesLinear Algebra and its Applications, 2011
In this article we examine the adjacency and Laplacian matrices and their eigenvalues and energies of the general product (non-complete extended $p$-sum, or NEPS) of signed graphs. We express the adjacency matrix of the product in terms of the Kronecker matrix product and the eigenvalues and energy of the product in terms of those of the factor signed ...
Germina, K.A.   +2 more
openaire   +2 more sources

Line and Subdivision Graphs Determined by T 4 -Gain Graphs

open access: yesMathematics, 2019
Let T 4 = { ± 1 , ± i } be the subgroup of fourth roots of unity inside T , the multiplicative group of complex units. For a T 4 -gain graph Φ = ( Γ , T 4 , φ ) , we introduce gain functions on ...
Abdullah Alazemi   +4 more
doaj   +1 more source

A Note On Line Graphs [PDF]

open access: yes, 2011
In this note we define two generalizations of the line graph and obtain some results.
Reddy, P. Siva Kota Kavita   +2 more
core   +1 more source

Home - About - Disclaimer - Privacy