Results 1 to 10 of about 2,396 (180)

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

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

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

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
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The structure of the space of polynomial solutions to the canonical central systems of differential equations on the block Heisenberg groups: A generalization of a theorem of Korányi

open access: yesTohoku Mathematical Journal, 2018
A result of Koranyi that describes the structure of the space of polynomial solutions to the Heisenberg Laplacian operator is generalized to the canonical central systems on the block Heisenberg groups. These systems of differential operators generalize the Heisenberg Laplacian and, like it, admit large algebras of conformal symmetries. The main result
openaire   +2 more sources

A Bilinear Bogolyubov Argument in Abelian Groups

open access: yesDiscrete Analysis
A bilinear Bogolyubov argument in abelian groups, Discrete Analysis 2024:20, 41 pp. Bogolyubov's argument states that if $A$ is a dense subset of $\mathbb Z_n$, then $2A-2A=\{x+y-z-w:x,y,z,w\in A\}$ contains a large and highly structured subset known ...
Luka Milićević
doaj   +1 more source

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