Results 21 to 30 of about 735,632 (298)
Star complements in signed graphs with two symmetric eigenvalues
Kuwait Journal of Science, 2022 We consider signed graphs $G$ whose spectrum is comprised of exactly two (distinct) eigenvalues that differ only in sign, abbreviated to signed graphs with two symmetric eigenvalues. We obtain some relationships between such signed graphs and their star
Assoc. Prof, Zoran Stanić
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Degree of an edge and Platt Number in signed networks
Ratio Mathematica, 2023 Positive labelled edges play a vital role in network analysis.The degree of edges in signed graphs is introduced by giving importance to positive edges incident on the end vertices of that edge. The concept of Platt number of a graph, which is the sum of
Diviya K D, Anjaly Kishore
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A study on integer additive set-valuations of signed graphs
Karpatsʹkì Matematičnì Publìkacìï, 2015 Let $\mathbb{N}_0$ denote the set of all non-negative integers and $\mathcal{P}(\mathbb{N}_0)$ be its power set. An integer additive set-labeling (IASL) of a graph $G$ is an injective set-valued function $f:V(G)\to\mathcal{P}(\mathbb{N}_0)\setminus ...
N.K. Sudev, K.A. Germina
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Smarandachely t-path step signed graphs [PDF]
, 2010 Characterizing signed graphs which are switching equivalent to their Smarandachely 3-path step signed ...
Reddy, Siva Kota +5 more
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Ordering signed graphs with large index [PDF]
, 2022 The index of a signed graph is the largest eigenvalue of its adjacency matrix. We establish the first few signed graphs ordered decreasingly by the index in classes of connected signed graphs, connected unbalanced signed graphs and complete signed graphs
Brunetti M +3 more
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Line Signed Graph of a Signed Total Graph
Electronic Notes in Discrete Mathematics, 2017 Abstract A signed total graph is an ordered pair T Σ ( Γ ( R ) ) : = ( T ( Γ ( R ) ) , σ ) , where T ( Γ ( R ) ) is the total graph of a commutative ring R, called the underlying graph of T Σ ( Γ ( R ) ) and T Σ ( Γ ( R ) ) is associated with a signing of its edges (a, b)
Mukti Acharya +3 more
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Total Minimal Dominating Signed Graph [PDF]
, 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.
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The n-th Power Signed Graphs-II [PDF]
, 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
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Negation Switching Equivalence in Signed Graphs [PDF]
, 2010 Unless mentioned or defined otherwise, for all terminology and notion in graph theory the reader is refer to [8].
Reddy, Siva Kota
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ON THE SIGNED MATCHINGS OF GRAPHS [PDF]
Facta Universitatis, Series: Mathematics and Informatics, 2020 For a graph $G$ and any $v\in V(G)$, $E_{G}(v)$ is the set of all edges incident with $v$. A function $f:E(G)\rightarrow \{-1,1\}$ is called a signed matching of $G$ if $\sum_{e\in E(v)}f(e) \leq 1$ for every $ {v\in V(G)}$. For a signed matching $x$, set $x(E(G))=\sum_{e\in E(G))}x(e)$.
Javan, Samane, Maimani, Hamid Reza
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