Results 61 to 70 of about 5,409,269 (206)

Effects on Seidel energy of two special types of graphs by perturbing edges

open access: yesKuwait Journal of Science
Let G be a simple undirected graph, and let S(G) be its Seidel matrix. The Seidel energy of G is defined as ES(G)=∑i=1n|λS(G)|, where λS(G),λS(G),…,λS(G) are Seidel eigenvalues of G.
doaj   +1 more source

Avoider-enforcer star games [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2015
Combinatorics
Andrzej Grzesik   +5 more
doaj   +1 more source

Characterization of Graphs Associated with Numerical Semigroups

open access: yesMathematics, 2019
Let Γ be a numerical semigroup. We associate an undirected graph G ( Γ ) with a numerical semigroup Γ with vertex set { v i : i ∈ N \ Γ } and edge set { v i v j ⇔ i + j ∈ Γ }
Muhammad Ahsan Binyamin   +4 more
doaj   +1 more source

Hamiltonian Paths in the Complete Graph with Edge-Lengths 1, 2, 3

open access: yesElectronic Journal of Combinatorics, 2010
Marco Buratti has conjectured that, given an odd prime $p$ and a multiset $L$ containing $p-1$ integers taken from $\{1,\ldots,(p-1)/2\}$, there exists a Hamiltonian path in the complete graph with $p$ vertices whose multiset of edge-lengths is equal to $
S. Capparelli, A. Fra
semanticscholar   +1 more source

A Ramsey-Theory-Based Approach to the Dynamics of Systems of Material Points

open access: yesDynamics
We propose a Ramsey-theory-based approach for the analysis of the behavior of isolated mechanical systems containing interacting particles. The total momentum of the system in the frame of the center of masses is zero.
Edward Bormashenko, Nir Shvalb
doaj   +1 more source

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