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Let $(\mathcal{G},\nu)$ be a $t$-discrete ergodic groupoid. Consider a finite Von Neumann algebra $\mathcal{M}$ with separable predual. We prove that every uniformly bounded measurable representation $\rho:\mathcal{G} \rightarrow…

Operator Algebras · Mathematics 2025-12-29 Alessio Savini

For a given poset, we consider its representations by systems of subspaces of a unitary space ordered by inclusion. We classify such systems for all posets for which an explicit classification is possible.

We present here algorithms for efficient computation of linear algebra problems over finite fields.

Symbolic Computation · Computer Science 2013-05-21 Jean-Guillaume Dumas , Clément Pernet

Motivated by the theory of unitary representations of finite dimensional Lie supergroups, we describe those Lie superalgebras which have a faithful finite dimensional unitary representation. We call these Lie superalgebras unitary. This is…

Quantum Algebra · Mathematics 2015-02-24 Saeid Azam , Karl-Hermann Neeb

The paper presents geometric models for the set WO of weak orders on a finite set. In particulary, WO is modeled as a set of vertices of a cubical subdivision of a permutahedron. This approach is an alternative to the usual representation…

Combinatorics · Mathematics 2007-05-23 Sergei Ovchinnikov

We consider a refinement of triangular factorization for unitary matrix valued loops.

Functional Analysis · Mathematics 2014-08-12 Doug Pickrell , Benjamin Pittman-Polletta

We characterize the fixed sets of automorphisms of an arbitrary countable, arithmetically saturated structure.

Logic · Mathematics 2026-05-21 James Schmerl

We relate extensions of completely unitary VOAs and (commutative) Q-systems. As an application, we show that any unitary extension of a completely unitary VOA is completely unitary.

Quantum Algebra · Mathematics 2026-01-21 Bin Gui

In this manuscript, we give a classification of all irreducible, unitary representations of complex spin groups.

Representation Theory · Mathematics 2024-04-05 Kayue Daniel Wong , Hongfeng Zhang

An elementary approach to the construction of Coxeter group representations is presented.

Representation Theory · Mathematics 2007-05-23 Ron M. Adin , Francesco Brenti , Yuval Roichman

This paper studies unitary representations with Dirac cohomology for complex groups, in particular relations to unipotent representations

Representation Theory · Mathematics 2010-07-09 Dan Barbasch , Pavle Pandžić

We classify the finite dimensional indecomposable sl(m/n)-modules with at least a typical or singly atypical primitive weight. We do this classification not only for weight modules, but also for generalized weight modules. We obtain that…

Representation Theory · Mathematics 2015-06-26 Yucai Su

We derive "numerical" criteria for the existence of embeddings of representations of finite dimensional algebras.

Representation Theory · Mathematics 2014-06-23 Kathrin Kerkmann , Markus Reineke

Linear codes have been an interesting subject of study for many years, as linear codes with few weights have applications in secrete sharing, authentication codes, association schemes, and strongly regular graphs. In this paper, a class of…

Information Theory · Computer Science 2016-01-27 Can Xiang , Chunming Tang , Keqin Feng

We prove some new cases of weight part of Serre's conjectures for mod $p$ Galois representations associated to automorphic representations on unitary groups $U(d)$. The approach is a generalization of the work of Gee-Liu-Savitt, namely, we…

Number Theory · Mathematics 2019-05-21 Hui Gao

We introduce a monoidal category whose morphisms are finite partial orders, with chosen minimal and maximal elements as source and target respectively. After recalling the notion of presentation of a monoidal category by the means of…

Logic in Computer Science · Computer Science 2015-05-28 Samuel Mimram

Linear codes with a few weights can be applied to communication, consumer electronics and data storage system. In addition, the weight hierarchy of linear codes has many applications such as on the type II wire-tap channel, dealing with…

Information Theory · Computer Science 2021-06-08 Fei Li , Xiumei Li

We consider anti-unification for simply typed lambda terms in associative, commutative, and associative-commutative theories and develop a sound and complete algorithm which takes two lambda terms and computes their generalizations in the…

Logic in Computer Science · Computer Science 2022-08-02 David M. Cerna , Temur Kutsia

We give criteria for finite dimensionality or infinite dimensionality of the polynomial centralizer of the Lie algebra of a linear Lie group, in terms of invariants and relative invariants of the group. In the finite dimensional scenario…

Mathematical Physics · Physics 2007-05-23 G. Gaeta , S. Walcher

Following Arthur's study of the representations of the orthogonal and symplectic groups, we prove many cases of both the local and global Arthur conjectures for tempered representations of the unitary group. This completes the proof of…

Number Theory · Mathematics 2012-12-10 Paul-James White