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Related papers: Weak mixing for locally compact quantum groups

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We show that every inclusion of von Neumann algebras with a faithful normal conditional expectation has the weak relative Dixmier property. This answers a question of Popa \cite{Po99}. The proof uses an improvement of Ellis' lemma for…

Operator Algebras · Mathematics 2020-05-27 Amine Marrakchi

The generalization of multiplicative unitary notion from compact quantum groups to compact quantum semigroups is considered. We show why the same construction doesn't work in this case by giving examples of C*-algebras with non-trivial…

Quantum Algebra · Mathematics 2013-02-01 Marat Alfredovich Aukhadiev

The article addresses some open questions about the relations between the topological weak mixing property and the transitivity of the map $f\times f^2 \times...\times f^m$, where $f\colon X\ra X$ is a topological dynamical system on a…

Dynamical Systems · Mathematics 2014-05-06 Dominik Kwietniak , Piotr Oprocha

We develop the theory of locally analytic representations of compact $p$-adic Lie groups from the perspective of the theory of condensed mathematics of Clausen and Scholze. As an application, we generalise Lazard's isomorphisms between…

Number Theory · Mathematics 2022-04-14 Joaquín Rodrigues Jacinto , Juan Esteban Rodríguez Camargo

In this paper we revisit the theory of induced representations in the setting of locally compact quantum groups. In the case of induction from open quantum subgroups, we show that constructions of Kustermans and Vaes are equivalent to the…

Operator Algebras · Mathematics 2020-04-01 Mehrdad Kalantar , Paweł Kasprzak , Adam Skalski , Piotr M. Sołtan

We use the theory of Condensed Mathematics to build a condensed cohomology theory for the Weil group of a $p$-adic field. The cohomology groups are proved to be locally compact abelian groups of finite ranks in some special cases. This…

Number Theory · Mathematics 2025-03-19 Marco Artusa

A characterization of relative weak mixing in W*-dynamical systems in terms of a relatively independent joining is proven.

Operator Algebras · Mathematics 2021-08-31 Rocco Duvenhage , Malcolm King

The equivariant coarse index is well-understood and widely used for actions by discrete groups. We extend the definition of this index to general locally compact groups. We use a suitable notion of admissible modules over $C^*$-algebras of…

K-Theory and Homology · Mathematics 2022-07-05 Hao Guo , Peter Hochs , Varghese Mathai

We introduce a new extragradient iterative process, motivated and inspired by [S. H. Khan, A Picard-Mann Hybrid Iterative Process, Fixed Point Theory and Applications, doi:10.1186/1687-1812-2013-69], for finding a common element of the set…

Functional Analysis · Mathematics 2014-03-14 Ibrahim Karahan , Murat Ozdemir

We completely characterize connected Lie groups all of whose countable subgroups are weakly amenable. We also provide a characterization of connected semisimple Lie groups that are weakly amenable. Finally, we show that a connected Lie…

Functional Analysis · Mathematics 2018-10-17 Søren Knudby

We introduce and investigate using Hilbert modules the properties of the Fourier algebra A(G) for a locally compact groupoid G. We establish a duality theorem for such groupoids in terms of multiplicative module maps. This includes as a…

Operator Algebras · Mathematics 2007-05-23 Alan L. T. Paterson

In this work, we establish a mixed local--nonlocal Sobolev-type inequality in the Heisenberg group and demonstrate that its extremals coincide with solutions to the corresponding mixed local--nonlocal singular $p$-Laplace equations. We…

Analysis of PDEs · Mathematics 2025-12-15 Prashanta Garain

We examine some of the properties of uniformly rigid transformations, and analyze the compatibility of uniform rigidity and (measurable) weak mixing along with some of their asymptotic convergence properties. We show that on Cantor space,…

Dynamical Systems · Mathematics 2009-03-14 Jennifer James , Thomas Koberda , Kathryn Lindsey , Cesar E. Silva , Peter Speh

We link conditional weak mixing and ergodicity of the tensor product in Riesz spaces. In particular, we characterise conditional weak mixing of a conditional expectation preserving system by the ergodicity of its tensor product with itself…

Functional Analysis · Mathematics 2022-11-09 Mohamed Amine Ben Amor , Jonathan M. Homann , Wenchi Kuo , Bruce A. Watson

In this paper, as a step towards a unified mathematical treatment of the gauge functionals from quantum field theory that have found profound applications in mathematics, we generalize the Seiberg-Witten functional that in particular…

Analysis of PDEs · Mathematics 2024-01-19 Wanjun Ai , Shuhan Jiang , Jürgen Jost

In this paper we study chaotic behavior of actions of a countable discrete group acting on a compact metric space by self-homeomorphisms. For actions of a countable discrete group G, we introduce local weak mixing and Li-Yorke chaos; and…

Dynamical Systems · Mathematics 2015-03-10 Zhaolong Wang , Guohua Zhang

In this paper we introduce the notion of weighted (weakly) almost periodic compactifcation of a semitopological semigroup and generalize this notion to corresponding notion for transformation semigroup.The inclusion relation and equality of…

Functional Analysis · Mathematics 2007-07-11 M. Abolghasemi , A. Rejali , H. R. E. Vishki

We introduce a new combinatorial condition that characterises the amenability for locally compact groups. Our condition is weaker than the well-known F{\o}lner's conditions, and so is potentially useful as a criteria to show the amenability…

Functional Analysis · Mathematics 2023-10-31 Hung Pham

In this article, we give a few examples of local rings in relation to weak normality and seminormality in mixed characteristic. It is known that two concepts can differ in the equal prime characteristic case, while they coincide in the…

Commutative Algebra · Mathematics 2026-03-03 Jun Horiuchi , Kazuma Shimomoto

The notion of an open quantum subgroup of a locally compact quantum group is introduced and given several equivalent characterizations in terms of group-like projections, inclusions of quantum group C*-algebras and properties of respective…

Operator Algebras · Mathematics 2016-08-15 Mehrdad Kalantar , Paweł Kasprzak , Adam Skalski