Results 21 to 30 of about 1,309 (212)

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

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

GROUPS WITH SMALL CONJUGACY CLASSES

open access: yesTamkang Journal of Mathematics, 1999
A group satisfies property (*) iff every conjugacy class has size not greater than 2. This paper proves properties of this type of group and conclude that it is a central product of an abelian group with 2-groups that are "almost" extra special.
How, G. A., Chuang, F. C.
openaire   +3 more sources

Sign Conjugacy Classes of the Symmetric Groups [PDF]

open access: yesThe Electronic Journal of Combinatorics, 2015
A conjugacy class $C$ of a finite group $G$ is a sign conjugacy class if every irreducible character of $G$ takes value 0, 1 or -1 on $C$. In this paper we classify the sign conjugacy classes of the symmetric groups and thereby verify a conjecture of Olsson.
openaire   +3 more sources

Groups with iterated restrictions on conjugacy classes

open access: yes, 2023
Let be a group class (such as the class of all finite groups). Starting from , we can define the class C of all groups G such that, for any g G, the co-centralizer G/CG((g)G) of g in G is an -group; of course, if = , these are the well-known FC-groups ...
Ferrara M., Trombetti M.
core   +1 more source

Base sizes for simple groups and a conjecture of Cameron [PDF]

open access: yes, 2009
Let G be a permutation group on a finite set ?. A base for G is a subset B C_ ? whose pointwise stabilizer in G is trivial; we write b(G) for the smallest size of a base for G. In this paper we prove that b(G) ?
Burness, TC   +5 more
core   +1 more source

Groups with conjugacy classes of coprime sizes

open access: yes
Suppose that x, y are elements of a finite group G lying in conjugacy classes of coprime sizes. We prove that ⟨xG⟩ ∩ ⟨yG⟩ is an abelian normal subgroup of G and, as a consequence, that if x and y are π‐regular elements for some set of primes π, then xG ...
Parker, C.   +8 more
core   +5 more sources

Lie analysis, conservation laws and travelling wave structures of nonlinear Bogoyavlenskii–Kadomtsev–Petviashvili equation

open access: yesResults in Physics, 2020
In this paper, the Bogoyavlenskii–Kadomtsev–Petviashvili (BKP) equation is taken into consideration by means of Lie symmetry analysis. Infinitesimal generators are computed under the invariance criteria of Lie groups and symmetry group for each generator
Adil Jhangeer   +5 more
doaj   +1 more source

Group Extensions with Infinite Conjugacy Classes [PDF]

open access: yesConfluentes Mathematici, 2017
We characterize the group property of being with infinite conjugacy classes (or icc , i.e. infinite and of which all conjugacy classes except { 1
openaire   +3 more sources

CHARACTER LEVELS AND CHARACTER BOUNDS

open access: yesForum of Mathematics, Pi, 2020
We develop the concept of character level for the complex irreducible characters of finite, general or special, linear and unitary groups. We give characterizations of the level of a character in terms of its Lusztig label and in terms of its degree ...
ROBERT M. GURALNICK   +2 more
doaj   +1 more source

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