Results 11 to 20 of about 2,633 (230)

Methods of group theory in Leibniz algebras: some compelling results

open access: yesResearches in Mathematics, 2021
The theory of Leibniz algebras has been developing quite intensively. Most of the results on the structural features of Leibniz algebras were obtained for finite-dimensional algebras and many of them over fields of characteristic zero.
I.Ya. Subbotin
doaj   +1 more source

Turán and Ramsey problems for alternating multilinear maps

open access: yesDiscrete Analysis, 2023
Turán and Ramsey problems for alternating multilinear maps, Discrete Analysis 2023:12, 22 pp. Ramsey's theorem (in its finite version) states that for every positive integer $k$ there exists a positive integer $n$ such that every graph with $n$ vertices
Youming Qiao
doaj   +1 more source

Anomaly matching in the symmetry broken phase: Domain walls, CPT, and the Smith isomorphism

open access: yesSciPost Physics, 2020
Symmetries in Quantum Field Theory may have 't Hooft anomalies. If the symmetry is unbroken in the vacuum, the anomaly implies a nontrivial low-energy limit, such as gapless modes or a topological field theory. If the symmetry is spontaneously broken,
Itamar Hason, Zohar Komargodski, Ryan Thorngren
doaj   +1 more source

Regularity and Inverse Theorems for Uniformity Norms on Compact Abelian Groups and Nilmanifolds [PDF]

open access: yes, 2022
We prove a general form of the regularity theorem for uniformity norms, and deduce an inverse theorem for these norms which holds for a class of compact nilspaces including all compact abelian groups, and also nilmanifolds; in particular we thus obtain ...
Candela, Pablo   +3 more
core   +1 more source

Invariant generalized ideal classes – structure theorems for p-class groups in p-extensions [PDF]

open access: yesProceedings - Mathematical Sciences, 2017
We give, in Sections 2 and 3, an english translation of: {\it Classes généralisées invariantes}, J. Math. Soc. Japan, 46, 3 (1994), with some improvements and with notations and definitions in accordance with our book: {\it Class Field Theory: from theory to practice}, SMM, Springer-Verlag, $2^{\rm nd}$ corrected printing 2005. We recall, in Section 4,
openaire   +4 more sources

Geometry applications of irreducible representations of Lie Groups [PDF]

open access: yes, 2010
In this note we give proofs of the following three algebraic facts which have applications in the theory of holonomy groups and homogeneous spaces: Any irreducibly acting connected subgroup $G \subset Gl(n,\rr)$ is closed.
Thomas Leistner   +5 more
core   +1 more source

An ethical approach to socio-economic information sources in ongoing vulnerability and resilience studies: the Mount Cameroon case

open access: yesAnnals of Geophysics, 2012
The study of the vulnerability of facing natural and man-made hazards, with the related resilient answers belong to the complex and articulate field of social sciences called ‘Disaster Anthropology’.
Maria Ilaria Pannaccione Apa   +4 more
doaj   +1 more source

Approximate invariance for ergodic actions of amenable groups

open access: yesDiscrete Analysis, 2019
Approximate invariance for ergodic actions of amenable groups, Discrete Analysis 2019:6, 56 pp. A basic phenomenon in additive combinatorics is that the "size" of a sumset $A+B$ or product set $AB$ of two sets $A,B$ is "usually" at least as large as the
Michael Björklund, Alexander Fish
doaj   +1 more source

A Geometric Study of Commutator Subgroups [PDF]

open access: yes, 2009
Let G be a group and G' its commutator subgroup. Commutator length (cl) and stable commutator length (scl) are naturally defined concepts for elements of G'. We study cl and scl for two classes of groups.
Zhuang, Dongping, Dongping Zhuang
core   +1 more source

Baumann-components of finite groups of characteristic p, reduction theorems

open access: yes, 2020
We continue the project started in "Baumann-components of finite groups of characteristic p, general theory" to describe the structure of the finite groups G of characteristic p in terms of their Baumann components and the conjugacy class Baup(G).
Parmeggiani G.   +2 more
core   +1 more source

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