English
Related papers

Related papers: Relative Weak Injectivity for C*-algebras

200 papers

We consider countable linear orders and study the quasi-order of convex embeddability and its induced equivalence relation. We obtain both combinatorial and descriptive set-theoretic results, and further extend our research to the case of…

Logic · Mathematics 2025-05-06 Martina Iannella , Alberto Marcone , Luca Motto Ros , Vadim Weinstein

This work provides some general theorems about unconditional and conditional weak convergence of empirical processes in the case of Poisson sampling designs. The theorems presented in this work are stronger than previously published…

Statistics Theory · Mathematics 2019-06-12 Leo Pasquazzi

This paper analyzes new classes of preradicals defined as weak forms of left exact and idempotent preradicals. We introduce prehereditary preradicals to generalize the hereditary property, and essentially idempotent and weakly idempotent…

Rings and Algebras · Mathematics 2025-09-16 Frank Murphy-Hernandez , Jose Ríos

We characterize the virtual link invariants that can be described as partition function of a real-valued R-matrix, by being weakly reflection positive. Weak reflection positivity is defined in terms of joining virtual link diagrams, which…

Quantum Algebra · Mathematics 2015-03-09 Guus Regts , Alexander Schrijver , Bart Sevenster

Motivation to revisit the Conley index theory for discrete multivalued dynamical systems stems from the needs of broader real applications, in particular in sampled dynamics or in combinatorial dynamics. The new construction of the index in…

Dynamical Systems · Mathematics 2022-02-03 Bogdan Batko

Let $M(1)$ be the vertex operator algebra with the Virasoro element $\omega$ associated to the Heisenberg algebra of rank $1$ and let $M(1)^{+}$ be the subalgebra of $M(1)$ consisting of the fixed points of an automorphism of $M(1)$ of…

Quantum Algebra · Mathematics 2017-09-20 Kenichiro Tanabe

We introduce a new propositional logic, called very weak subintuitionistic logic $\mathbf{VF}$, by adapting the relational semantics of Fitting, Marek, and Truszczy\'nski for the pure logic of necessitation $\mathbf{N}$ to the propositional…

Logic · Mathematics 2026-05-21 Taishi Kurahashi , Mashu Noguchi

The theory of finite and infinitary term rewriting is extensively developed for orthogonal rewrite systems, but to a lesser degree for weakly orthogonal rewrite systems. In this note we present some contributions to the latter case of weak…

Logic in Computer Science · Computer Science 2009-11-06 Joerg Endrullis , Clemens Grabmayer , Dimitri Hendriks , Jan Willem Klop

We construct the weak nonstandard hull of a normed linear space X from *X (the nonstandard extension of X) using the weak topology on X. The bidual (i.e. the second dual) X" is shown to be isometrically isomorphic to the weak nonstandard…

Functional Analysis · Mathematics 2008-10-20 Siu-Ah Ng

Let $H$ be a weak Hopf algebra with a bijective antipode and $A$ an $H$-comodule Poisson algebra. In this paper, we mainly generalize the fundamental theorem of Poisson Hopf modules to the case of weak Hopf algebras. Besides we will deduce…

Quantum Algebra · Mathematics 2024-09-16 Daowei Lu , Dingguo Wang

We study the notion of weak amalgamation in the context of diagonal conjugacy classes. Generalizing results of Kechris and Rosendal, we prove that for every countable structure $M$, Polish group $G$ of permutations of $M$, and $n \geq 1$,…

Logic · Mathematics 2022-03-11 Maciej Malicki

The present paper is concerned with some representatons of linear mappings of continuous functions into locally convex vector spaces, namely: If X is a complete Hausdorff locally convex vector space, then a general form of weakly compact…

Functional Analysis · Mathematics 2012-12-07 Miloslav Duchon

Examples are constructed of sparse subsequences of the integers for which the associated maximal averages operator is of weak type (1,1). A consequence, by transference, is that an almost everywhere L^1 -- type ergodic theorem holds for…

Classical Analysis and ODEs · Mathematics 2011-08-30 Michael Christ

We discuss the relationships between effect algebras with the Riesz Decomposition Property and partially ordered groups with interpolation. We show that any $\sigma$-orthocomplete atomic effect algebra with the Riesz Decomposition Property…

Commutative Algebra · Mathematics 2015-06-04 Anatolij Dvurecenskij , Yongjian Xie

In this paper, we introduce a new algebraic type of `convexoid rings', and we give the definition of (weak) convexoid schemes, which share similar properties with ordinary schemes. As a result, we give a purely-algebraic construction of the…

Algebraic Geometry · Mathematics 2012-03-26 Satoshi Takagi

The main goal of this paper is to introduce and explore an appropriate notion of weakly Rickart JB$^*$-triples. We introduce weakly order Rickart JB$^*$-triples, and we show that a C$^*$-algebra $A$ is a weakly (order) Rickart JB$^*$-triple…

Operator Algebras · Mathematics 2022-02-17 Jorge J. Garcés , Lei Li , Antonio M. Peralta , Haifa M. Tahlawi

Our starting point is a basic problem in Hermite interpolation theory, namely determining the least degree of a homogeneous polynomial that vanishes to some specified order at every point of a given finite set. We solve this problem if the…

Commutative Algebra · Mathematics 2018-11-07 Uwe Nagel , Bill Trok

The W-set of an element of a weak order poset is useful in the cohomological study of the closures of spherical subgroups in generalized flag varieties. We explicitly describe in a purely combinatorial manner the W-sets of the weak order…

Combinatorics · Mathematics 2014-09-16 Mahir Bilen Can , Michael Joyce , Benjamin Wyser

Every absolutely summing linear operator is weakly compact. However, for strongly summing multilinear operators and polynomials - one of the most natural extensions of the linear case to the non linear framework - weak compactness does not…

Functional Analysis · Mathematics 2013-11-20 Daniel Pellegrino , Pilar Rueda , Enrique A. Sanchez-Perez

The concept of weak Lie motion (weak Lie symmetry) is introduced through ${\cal{L}}_{\xi}{\cal{L}}_{\xi}g_{ab}=0,$ (${\cal{L}}_{\xi}{\cal{L}}_{\xi}f=0$). Applications are given which exhibit a reduction of the usual symmetry, e.g., in the…

Mathematical Physics · Physics 2015-06-12 Hubert F. M. Goenner