Results 1 to 10 of about 16,190,035 (264)

A Characterization of the Finite Simple Group PSp₄(3) [PDF]

Canadian Journal of Mathematics - Journal Canadien de Mathematiques, 1967
The aim of this paper is to characterize the finite simple group PSp4(3) by the structure of the centralizer of an involution contained in the centre of its Sylow 2-subgroup. More precisely, we shall prove the following result.
Zvonimir Janko
openalex   +2 more sources

A Characterization of the finite simple group L₄(3) [PDF]

Journal of the Australian Mathematical Society, 1969
In this paper we aim to give a characterization of the finite simple group L4(3) (i.e. PSL(4, 3)) by the structure of the centralizer of an involution contained in the centre of its Sylow 2-subgroup. More precisely, we shall prove the following result.
Kok-Wee Phan
openalex   +2 more sources

Classifying cubic symmetric graphs of order 52p2; pp. 55–60 [PDF]

Proceedings of the Estonian Academy of Sciences, 2023
An automorphism group of a graph is said to be s-regular if it acts regularly on the set of s-arcs in the graph. A graph is s-regular if its full automorphism group is s-regular.
Shangjing Hao, Shixun Lin
doaj   +1 more source

Simple and Fast Group Robustness by Automatic Feature Reweighting [PDF]

International Conference on Machine Learning, 2023
A major challenge to out-of-distribution generalization is reliance on spurious features -- patterns that are predictive of the class label in the training data distribution, but not causally related to the target.
Shi Qiu, Andres Potapczynski, Pavel Izmailov, A. Wilson   +3 more
semanticscholar   +1 more source

A NEW CHARACTERIZATION OF SIMPLE GROUP G 2 (q) WHERE q ⩽ 11 [PDF]

Journal of Algebraic Systems, 2020
Let G be a finite group , in this paper using the order and largest element order of G we show that every finite group with the same order and largest element order as G 2 (q), where q ⩽ 11 is necessarily isomorphic to the group G 2 (q)
M. Bibak, Gh.R. Rezaeezadeh, E. Esmaeilzadeh   +2 more
doaj   +1 more source

Reduced designs constructed by Key-Moori Method $2$ and their connection with Method $3$ [PDF]

AUT Journal of Mathematics and Computing, 2023
For a 1-$(v,k,\lambda)$ design $\mathcal{D}$ containing a point $x$, we study the set $I_x$, the intersection of all blocks of $\mathcal{D}$ containing $x$.
Amin Saeidi
doaj   +1 more source

A 2-arc Transitive Hexavalent Nonnormal Cayley Graph on A₁₁₉

Mathematics, 2021
A Cayley graph Γ=Cay(G,S) is said to be normal if the base group G is normal in AutΓ. The concept of the normality of Cayley graphs was first proposed by M.Y.
Bo Ling, Wanting Li, Bengong Lou
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On the uniform domination number of a finite simple group [PDF]

Transactions of the American Mathematical Society, 2017
Let $G$ be a finite simple group. By a theorem of Guralnick and Kantor, $G$ contains a conjugacy class $C$ such that for each non-identity element $x \in G$, there exists $y \in C$ with $G = \langle x,y\rangle$. Building on this deep result, we introduce
Timothy C. Burness, Scott Harper
semanticscholar   +1 more source

Symmetric graphs of valency seven and their basic normal quotient graphs

Open Mathematics, 2021
We characterize seven valent symmetric graphs of order 2pqn2p{q}^{n} with ...
Pan Jiangmin, Huang Junjie, Wang Chao
doaj   +1 more source

A finitely presented infinite simple group of homeomorphisms of the circle [PDF]

Journal of the London Mathematical Society, 2017
We construct a finitely presented, infinite, simple group that acts by homeomorphisms on the circle, but does not admit a non‐trivial action by C1 ‐diffeomorphisms on the circle. This is the first such example.
Y. Lodha
semanticscholar   +1 more source