Results 21 to 30 of about 8,142 (196)

Graphs having no quantum symmetry [PDF]

open access: yes, 2006
We consider circulant graphs having $p$ vertices, with $p$ prime. To any such graph we associate a certain number $k$, that we call type of the graph. We prove that for $p>>k$ the graph has no quantum symmetry, in the sense that the quantum automorphism ...
Banica, Teodor   +2 more
core   +4 more sources

Resolvability in Subdivision of Circulant Networks Cn1,k

open access: yesDiscrete Dynamics in Nature and Society, 2020
Circulant networks form a very important and widely explored class of graphs due to their interesting and wide-range applications in networking, facility location problems, and their symmetric properties.
Jianxin Wei   +3 more
doaj   +1 more source

On Dispersability of Some Circulant Graphs [PDF]

open access: yesJournal of Graph Algorithms and Applications, 2022
20 pages, 14 figures, accepted for publication in the Journal of Graph Algorithms and ...
Kainen, Paul C.   +2 more
openaire   +3 more sources

The hyperbolicity constant of infinite circulant graphs

open access: yesOpen Mathematics, 2017
If X is a geodesic metric space and x1, x2, x3 ∈ X, a geodesic triangle T = {x1, x2, x3} is the union of the three geodesics [x1x2], [x2x3] and [x3x1] in X.
Rodríguez José M., Sigarreta José M.
doaj   +1 more source

Rotational circulant graphs

open access: yesDiscrete Applied Mathematics, 2014
Final ...
Thomson, Alison, Zhou, Sanming
openaire   +2 more sources

Stability of circulant graphs [PDF]

open access: yesJournal of Combinatorial Theory, Series B, 2019
The canonical double cover $\mathrm{D}(Γ)$ of a graph $Γ$ is the direct product of $Γ$ and $K_2$. If $\mathrm{Aut}(\mathrm{D}(Γ))=\mathrm{Aut}(Γ)\times\mathbb{Z}_2$ then $Γ$ is called stable; otherwise $Γ$ is called unstable. An unstable graph is nontrivially unstable if it is connected, non-bipartite and distinct vertices have different neighborhoods.
Yan-Li Qin, Binzhou Xia, Sanming Zhou
openaire   +2 more sources

On circulant nut graphs

open access: yesLinear Algebra and its Applications, 2022
26 ...
Ivan Damnjanović, Dragan Stevanović
openaire   +2 more sources

Counting 2-circulant graphs [PDF]

open access: yesJournal of the Australian Mathematical Society. Series A. Pure Mathematics and Statistics, 1985
AbstractAlspach and Sutcliffe call a graph X(S, q, F) 2-circulant if it consists of two isomorphic copies of circulant graphs X(p, S) and X(p, qS) on p vertices with “cross-edges” joining one another in a prescribed manner. In this paper, we enumerate the nonisomorphic classes of 2-circulant graphs X(S, q, F) such that |S| = m and |F| = k.
Chia, Gek-Ling, Lim, Chong-Keang
openaire   +2 more sources

On the Metric Dimension of Directed and Undirected Circulant Graphs

open access: yesDiscussiones Mathematicae Graph Theory, 2020
The undirected circulant graph Cn(±1, ±2, . . . , ±t) consists of vertices v0, v1, . . . , vn−1 and undirected edges vivi+j, where 0 ≤ i ≤ n − 1, 1 ≤ j ≤ t (2 ≤ t ≤ n2{n \over 2} ), and the directed circulant graph Cn(1, t) consists of vertices v0, v1, .
Vetrík Tomáš
doaj   +1 more source

Cohen–Macaulay Circulant Graphs [PDF]

open access: yesCommunications in Algebra, 2014
Let G be the circulant graph C n (S) with , and let I(G) denote the edge ideal in the ring R = k[x 1,…, x n ]. We consider the problem of determining when G is Cohen–Macaulay, i.e, R/I(G) is a Cohen–Macaulay ring. Because a Cohen–Macaulay graph G must be well-covered, we focus on known families of well-covered circulant graphs of the form C n (1, 2 ...
Kevin N. Vander Meulen   +2 more
openaire   +1 more source

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