Results 11 to 20 of about 29,505 (192)

Two Types of Non-Abelian Topological Phase Transitions Under Duality Mapping in 1D Photonic Chains. [PDF]

open access: yesAdv Sci (Weinh)
In this work, two types of non‐Abelian phase transitions are revealed. The first type is the braided‐node type, signified by the Dirac degeneracy node moving into or out of the unit circle. The second type corresponds to the emerging of nodal‐line degeneracy which intersects with unit circles.
Liu Y   +6 more
europepmc   +2 more sources

The one-prime power hypothesis for conjugacy classes restricted to normal subgroups and quotient groups [PDF]

open access: yesInternational Journal of Group Theory, 2019
We say that a group $G$ satisfies the one-prime power hypothesis for conjugacy classes if the greatest common divisor for all pairs of distinct conjugacy class sizes are prime powers‎.
Julian Brough
doaj   +1 more source

Finite non-nilpotent groups with few non-normal non-cyclic subgroups [PDF]

open access: yesInternational Journal of Group Theory, 2017
‎‎For a finite group $G$‎, ‎let $nu_{nc}(G)$ denote the number of conjugacy classes of non-normal non-cyclic subgroups of $G$‎. ‎We characterize the finite non-nilpotent groups whose all non-normal non-cyclic subgroups are conjugate‎.
Hamid Mousavi, Zahra Rezazadeh
doaj   +1 more source

On conjugacy classes of the F4 group over a field q with characteristic 2

open access: yesSt. Petersburg Polytechnical University Journal: Physics and Mathematics, 2022
This article continues a series of papers devoted to solving the problem by which a non-identity conjugacy class in a finite simple non-abelian group contains commuting elements. Previously, this statement was tested for sporadic, projective, alternating
Yurova Nadezhda
doaj   +1 more source

Abelian varieties with isogenous reductions

open access: yesComptes Rendus. Mathématique, 2021
Let $A_1$ and $A_2$ be abelian varieties over a number field $K$. We prove that if there exists a non-trivial morphism of abelian varieties between reductions of $A_1$ and $A_2$ at a sufficiently high percentage of primes, then there exists a non-trivial
Khare, Chandrashekhar B.   +1 more
doaj   +1 more source

On Lusztig's map for spherical unipotent conjugacy classes in disconnected groups

open access: yesBulletin of the London Mathematical Society, 2023
AbstractLet be a simple algebraic group over an algebraically closed field and let be a graph‐automorphism of . We classify the spherical unipotent conjugacy classes in the coset . As a by‐product, we show that J.‐H. Lu's characterization in characteristic zero of spherical conjugacy classes in by the dimension formula also holds for spherical ...
Costa Cesari, M, Costantini, M
openaire   +2 more sources

Two moonshines for L2(11) but none for M12

open access: yesNuclear Physics B, 2019
In this paper, we revisit an earlier conjecture by one of us that related conjugacy classes of M12 to Jacobi forms of weight zero and index one. We construct Jacobi forms for all conjugacy classes of M12 that are consistent with constraints from group ...
Suresh Govindarajan, Sutapa Samanta
doaj   +1 more source

On bipartite divisor graphs for group conjugacy class sizes

open access: yesJournal of Pure and Applied Algebra, 2009
Many authors have considered the influence of arithmetic structure, such as conjugacy class sizes or character degrees, on the algebraic structure of a finite group. Graphs have been introduced to illustrate this arithmetic structure. Let \(X\) be a set of positive integers, then the `prime vertex graph' \(\Delta(X)\) of \(X\) is defined as follows ...
BUBBOLONI, DANIELA   +3 more
openaire   +3 more sources

Characterization of Frobenius Groups of Special Type [PDF]

open access: yes, 2006
We define a Con-Cos group G to be one having a proper normal subgroup N whose cosets other than N itself are conjugacy classes. It follows easily that N = G’, the derived group of G.
Muktibodh, Arun S.
core   +1 more source

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