Results 81 to 90 of about 994,076 (215)
Sensitivity and Hamming Graphs
ABSTRACT For any m ≥ 3 we show that the Hamming graph H ( n , m ) admits an imbalanced partition into m sets, each inducing a subgraph of low maximum degree. This improves previous results by Tandya and by Potechin and Tsang, and disproves the Strong m‐ary Sensitivity Conjecture of Asensio, García‐Marco, and Knauer.
Sara Asensio +3 more
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Isomorphisms of generalized Cayley graphs
Summary: In this paper, we investigate the isomorphism problems of the generalized Cayley graphs, which are generalizations of the traditional Cayley graphs. We find that there are two types of natural isomorphisms for the generalized Cayley graphs. We also study the GCI-groups among the generalized Cayley graphs, and the Cayley regressions of some ...
Xu Yang, Weijun Liu, Lihua Feng
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Perfect Codes in Cayley Graphs [PDF]
This is the final version that will appear in SIAM J.
He Huang, Binzhou Xia, Sanming Zhou
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Maximum Induced Trees and Forests of Bounded Degree in Random Graphs
ABSTRACT The asymptotic behavior of the maximum sizes of induced trees and forests has been studied extensively in the last few decades, though the overall picture is far from being complete. In this paper, we close several significant gaps: (1) We prove 2‐point concentration of the maximum sizes of an induced forest and an induced tree with maximum ...
Margarita Akhmejanova +2 more
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Pentavalent arc-transitive Cayley graphs on Frobenius groups with soluble vertex stabilizer
A Cayley graph Γ is said to be arc-transitive if its full automorphism group AutΓ is transitive on the arc set of Γ. In this paper we give a characterization of pentavalent arc-transitive Cayley graphs on a class of Frobenius groups with soluble vertex ...
Liu Hailin
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The author considers the Cayley graphs \(\Gamma\) of a group \(G\) which have the property that \(\Aut\Gamma= L(G)R(G)\), where \(L(G)\) and \(R(G)\) denote the left and the right regular representation of \(G\). He proves that this equation holds if and only if \(\Gamma\) is a graphical regular representation of \(G\cong (\mathbb{Z})^n\) \((n> 4)\).
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Proper 3‐realizability and second cohomology of groups on two generators of finite order
Abstract Given an (infinite) finitely generated group G$G$, its first cohomology group H1(G;ZG)$H^1(G;{\mathbb {Z}}G)$ is free abelian and “counts” the number of ends of G$G$ which equals 1+rank(H1(G;ZG))$1 + rank (H^1(G;{\mathbb {Z}}G))$. The question whether or not for every finitely presented group G$G$ its second cohomology group H2(G;ZG)$H^2(G ...
Francisco F. Lasheras, R. Roy
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ON (3,6) AND (4,6) - FULLERENE CAYLEY GRAPHS
An (r, s)-fullerene graph is a planar 3-regular graph with only Cr and Cs faces, where Cn denotes a cycle of length n. In this paper, the (3,6)-fullerene Cayley graphs constructed from finite groups are classified.
Ali Reza ASHRAFI +2 more
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Domination Parameters of the Unitary Cayley Graph of /n
The unitary Cayley graph of /n, denoted Xn, is the graph with vertex set {0, . . ., n − 1} where vertices a and b are adjacent if and only if gcd(a − b, n) = 1.
Burcroff Amanda
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