Results 101 to 110 of about 20,494 (188)

On 2-integral Cayley graphs

open access: yesArs Mathematica Contemporanea
In this paper, we introduce the concept of $k$-integral graphs. A graph $Γ$ is called $k$-integral if the extension degree of the splitting field of the characteristic polynomial of $Γ$ over rational field $\mathbb Q$ is equal to $k$. We prove that the set of all finite connected graphs with given algebraic degree and maximum degree is finite.
Abdollahi, Alireza   +3 more
openaire   +2 more sources

Replacement and zig-zag products, Cayley graphs and Lamplighter random walk [PDF]

open access: yesInternational Journal of Group Theory, 2013
We investigate two constructions - the replacement and the zig-zag product of graphs - describing several fascinating connections with Combinatorics, via the notion of expander graph, Group Theory, via the notion of semidirect product and Cayley graph ...
Alfredo Donno
doaj  

NORMAL 6-VALENT CAYLEY GRAPHS OF ABELIAN GROUPS

open access: yesInternational Journal of Industrial Engineering and Production Research, 2008
: We call a Cayley graph Γ = Cay (G, S) normal for G, if the right regular representation R(G) of G is normal in the full automorphism group of Aut(Γ). In this paper, a classification of all non-normal Cayley graphs of finite abelian group with valency 6
M. Alaeiyan
doaj  

A Cayley graph for $F_{2}\times F_{2}$ which is not minimally almost convex

open access: yes
We give an example of a Cayley graph $\Gamma$ for the group $F_{2}\times F_{2}$ which is not minimally almost convex (MAC). On the other hand, the standard Cayley graph for $F_{2}\times F_{2}$ does satisfy the falsification by fellow traveler property ...
Price, Andrew Elvey
core  

Non-Isomorphic Cayley Graphs of Metacyclic Groups of Order 8p with the Same Spectrum

open access: yesMathematics
The spectrum of a graph Γ, denoted by Spec(Γ), is the multiset of eigenvalues of its adjacency matrix. A Cayley graph Cay(G,S) of a finite group G is called Cay-DS (Cayley graph determined by its spectrum) if, for any other Cayley graph Cay(G,T), Spec ...
Lang Tang, Weijun Liu, Rongrong Lu
doaj   +1 more source

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