Results 71 to 80 of about 74,995 (149)

Quasirandom and quasisimple groups

open access: yesDiscrete Analysis
Quasirandom and quasisimple groups, Discrete Analysis 2025:21, 24 pp. A quasirandom family of groups is a sequence of finite groups $(G_n)$ such that the smallest dimension of a non-trivial irreducible representation of $G_n$ tends to infinity with $n$.
Marco Barbieri, Luca Sabatini
doaj   +1 more source

Counting topological types of finite group actions

open access: yes, 2017
We study fully ramified actions of the elementary abelian $p$ group of rank $k\geq 1$, on surfaces of genus $g$, obtaining explicit counts of topological equivalence classes via a combinatorial approach.
Carvacho, Mariela, Weaver, Anthony
core  

Bohr sets in sumsets I: Compact abelian groups

open access: yesDiscrete Analysis
Bohr sets in sumsets I: Compact abelian groups, Discrete Analysis 2025:11, 37 pp. Since Bogolyubov’s 1939 result concerning Bohr structure inside sets of the form $A+A−A−A$, much has been written about how “smooth” sumsets are, where smoothness is ...
Anh N Le, Thái Hoàng Lê
doaj   +1 more source

Lower bounds for ranks of Mumford-Tate groups

open access: yes, 2013
Let A be a complex abelian variety and G its Mumford--Tate group. Supposing that the simple abelian subvarieties of A are pairwise non-isogenous, we find a lower bound for the rank of G, which is a little less than log_2 dim A.
Orr, Martin
core  

Towards a complete classification of 6D supergravities

open access: yesJournal of High Energy Physics
The constraints arising from anomaly cancellation are particular strong for chiral theories in six dimensions. We make progress towards a complete classification of 6D supergravities with minimal supersymmetry and non-abelian gauge group.
Yuta Hamada, Gregory J. Loges
doaj   +1 more source

Complete hyperkaehler 4n-manifolds with a local tri-Hamiltonian R^n-action

open access: yes, 1999
We classify those manifolds mentioned in the title which have finite topological type. Namely we show any such connected M is isomorphic to a hyperkaehler quotient of a flat quaternionic vector space by an abelian group.
Bielawski, Roger
core  

Discovering T-dualities of little string theories

open access: yesJournal of High Energy Physics
We describe a general method for deducing T-dualities of little string theories, which are dualities between these theories that arise when they are compactified on circle.
Lakshya Bhardwaj
doaj   +1 more source

Periodicity of joint co-tiles in $\mathbb{Z}^d$

open access: yesDiscrete Analysis
Periodicity of joint co-tiles in $\mathbb{Z}^d$, Discrete Analysis 2024:13, 32 pp. A finite subset, or *tile*, $F$ of an abelian group $G$ is said to *tile $G$ by translations* if there there is some complementary set, or *co-tile*, $A$ of $G$ such that
Tom Meyerovitch   +2 more
doaj   +1 more source

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