Results 61 to 70 of about 18,773 (121)

Random Cayley Digraphs and the Discrete Logarithm [PDF]

open access: yes, 2002
We formally showthat there is an algorithm for dlog over all abelian groups that runs in expected optimal time (up to logarithmic factors) and uses only a small amount of space. To our knowledge, this is the first such analysis. Our algorithm is a modification of the classic Pollard rho, introducing explicit randomization of the parameters for the ...
Jeremy Horwitz, Ramarathnam Venkatesan
openaire   +1 more source

The dilating method to obtain dense cayley digraphs on finite abelian groups [PDF]

open access: yes, 2021
A geometric method for obtaining an infinite family of Cayley digraphs of constant density on finite abelian groups is presented. The method works for any given degree d ≥ 2, and it is based on consecutive dilates of a minimum distance diagram associated
Pérez Mansilla, Sonia   +2 more
core   +3 more sources

ON THE NORMALITY OF SOME CAYLEY DIGRAPHS WITH VALENCY 2 [PDF]

open access: yes, 2011
We call a Cayley digraph 􀀀=Cay(G; S) normal for G if R(G), the rightregular representation of G, is a normal subgroup of the full automorphism groupAut(􀀀) of 􀀀.
Mehdi Alaeiyan
core   +1 more source

Algebraic degrees of $n$-Cayley digraphs over abelian groups [PDF]

open access: yes
A digraph is called an $n$-Cayley digraph if its automorphism group has an $n$-orbit semiregular subgroup. We determine the splitting fields of $n$-Cayley digraphs over abelian groups and compute a bound on their algebraic degrees, before applying our ...
Liu, Xiaogang, Li, Hao
core   +1 more source

Isomorphisms of Finite Cayley Digraphs of Bounded Valency, II [PDF]

open access: yes, 1999
For a finite group G and a subset S of G which does not contain the identity of G, denote by Cay(G, S) the Cayley digraph of G with respect to S. An automorphism σ of the group G induces a graph isomorphism from Cay(G, S) to Cay(G, Sσ). In this paper, we
Li, Cai Heng, Cai Heng Li
core   +1 more source

On the primitivity of Cayley digraphs

open access: yesLinear Algebra and its Applications, 2011
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +1 more source

Isomorphisms of Cayley digraphs of Abelian groups [PDF]

open access: yesBulletin of the Australian Mathematical Society, 1998
For a finite group G and a subset S of G with 1 ∉ S, the Cayley graph Cay(G, S) is the digraph with vertex set G such that (x, y) is an arc if and only if yx−1 ∈ S. The Cayley graph Cay(G, S) is called a CI-graph if, for any T ⊂ G, whenever Cay (G, S) ≅ Cay(G, T) there is an element a σ ∈ Aut(G) such that Sσ = T.
openaire   +2 more sources

Digraphs on permutations [PDF]

open access: yes, 1997
We study a family of vertex transitive digraphs whose vertices represent the k-permutations of n elements. After showing some general properties, we concentrate upon the study of the symmetry of these digraphs.
Fiol, M.L., Fiol, M.A., Brunat, J.M.
core   +1 more source

Cayley Coset Digraphs

open access: yesEuropean Journal of Applied Sciences
In this paper, a new class of digraphs, namely, Cayley coset digraphs  associated with a group , a subgroup  and a subset  of  is introduced and it is shown that it is vertex transitive. Further the conditions under which this digraph is connected, complete and has loops and parallel edges are obtained.
Sujatha Suram, Madhavi Levaku
openaire   +1 more source

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