Results 1 to 10 of about 147,034 (194)

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

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

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 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

Comparison theorems on H-type sub-Riemannian manifolds. [PDF]

open access: yesCalc Var Partial Differ Equ
Baudoin F   +3 more
europepmc   +1 more source

Surgery and positive Bakry-Émery Ricci curvature. [PDF]

open access: yesCalc Var Partial Differ Equ
Reiser P, Tripaldi F.
europepmc   +1 more source

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