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We define and study the structure of SUSY Lie conformal and vertex algebras. This leads to effective rules for computations with superfields.

Quantum Algebra · Mathematics 2008-11-26 Reimundo Heluani , Victor G. Kac

We show that the class of representable substitution algebras is characterized by a set of universal first order sentences. In addition, it is shown that a necessary and sufficient condition for a substitution algebra to be representable is…

Logic · Mathematics 2015-03-05 Norman Feldman

We consider some special type extensions of an arbitrary Lie algebra, which we call universal extensions. We show that these extensions are in one-to-one correspondence with finite dimensional associative commutative algebras. We also…

Rings and Algebras · Mathematics 2007-05-23 A B Yanovski

An infinite filiform Lie algebra L is residually nilpotent and its graded associated with respect to the lower central series has smallest possible dimension in each degree but is still infinite. This means that gr(L) is of dimension two in…

Rings and Algebras · Mathematics 2020-10-27 Clas Löfwall

We classify unital associative conformal algebras of linear growth and provide new examples of such.

Rings and Algebras · Mathematics 2007-05-23 Alexander Retakh

We classify a class of infinite-dimensional simple graded pre-Lie algebras on the graded vector space underlying the algebra of Laurent polynomials, with a specific form for the product.

Rings and Algebras · Mathematics 2007-05-23 Frederic Chapoton

We prove strong and explicit diameter bounds for finite simple Lie algebras, which parallel Babai's conjecture for finite simple groups. Specifically, we show that any nonabelian finite simple Lie algebra $\mathfrak{g}$ over $\mathbf{F}_p$…

Rings and Algebras · Mathematics 2025-09-30 Marco Barbieri , Urban Jezernik , Matevž Miščič

We give uniform formulas for the branching rules of level 1 modules over orthogonal affine Lie algebras for all conformal pairs associated to symmetric spaces. We also provide a combinatorial intepretation of these formulas in terms of…

Mathematical Physics · Physics 2008-10-11 Paola Cellini , Victor G. Kac , Pierluigi Moseneder Frajria , Paolo Papi

Let $\Omega \subset \mathbb{C}^n$ be a bounded domain and let $\mathcal{A} \subset \mathcal{C}(\bar{\Omega})$ be a uniform algebra generated by a set $F$ of holomorphic and pluriharmonic functions. Under natural assumptions on $\Omega$ and…

Complex Variables · Mathematics 2016-08-14 Håkan Samuelsson , Erlend Fornæss Wold

We prove that direct limits of finite dimensional Lie algebroids and their prolongations can be endowed with structures of convenient spaces.

Differential Geometry · Mathematics 2016-06-03 Patrick Cabau

Associative algebras with involution over a field of zero characteristic are considered. It is proved that in this case for any finitely generated associative algebra with involution there exists a finite dimensional algebra with involution…

Rings and Algebras · Mathematics 2013-02-13 Irina Sviridova

Let $G$ be a finite group. There is a standard theorem on the classification of $G$-equivariant finite dimensional simple commutative, associative, and Lie algebras (i.e., simple algebras of these types in the category of representations of…

Rings and Algebras · Mathematics 2015-12-25 Pavel Etingof

We construct a monomial basis of the positive part of the quantized enveloping algebra associated to a finite-dimensional simple Lie algebra. As an application we give a simple proof of the existence and uniqueness of the canonical basis of…

Quantum Algebra · Mathematics 2007-05-23 Vyjayanthi Chari , Nanhua Xi

We classify $n$-representation infinite algebras $\Lambda$ of type \~A. This type is defined by requiring that $\Lambda$ has higher preprojective algebra $\Pi_{n+1}(\Lambda) \simeq k[x_1, \ldots, x_{n+1}] \ast G$, where $G \leq…

Representation Theory · Mathematics 2024-11-25 Darius Dramburg , Oleksandra Gasanova

The algebras of the title are infinite-dimensional graded Lie algebras $L= \bigoplus_{i=1}^{\infty}L_i$, over a field of positive characteristic $p$, that are generated by an element of degree $1$ and an element of degree $p$, and satisfy…

Rings and Algebras · Mathematics 2025-01-29 Valentina Iusa , Sandro Mattarei , Claudio Scarbolo

We investigate infinitary wellfounded systems for linear logic with fixed points, with transfinite branching rules indexed by some closure ordinal $\alpha$ for fixed points. Our main result is that provability in the system for some…

Logic · Mathematics 2026-02-24 Anupam Das , Tikhon Pshenitsyn

We classify, up to equivalence, all finite-dimensional simple graded division algebras over the field of real numbers. The grading group is any finite abelian group.

Rings and Algebras · Mathematics 2015-06-09 Yuri Bahturin , Mikhail Zaicev

We prove that uniformly locally finite metric spaces with isomorphic Roe algebras must be coarsely equivalent. As an application, we also prove that the outer automorphism group of the Roe algebra of a metric space of bounded geometry is…

Operator Algebras · Mathematics 2025-03-10 Diego Martínez , Federico Vigolo

A Lie superalgebra is attached to any finite-dimensional J-ternary algebra over an algebraically closed field of characteristic 3, using a process of semisimplification via tensor categories. Some of the exceptional simple Lie algebras,…

Rings and Algebras · Mathematics 2026-03-13 Isabel Cunha , Alberto Elduque

We prove a finite torsion-free associative conformal algebra to have a finite faithful conformal representation. As a corollary, it is shown that one may join a conformal unit to such an algebra. Some examples are stated to demonstrate that…

Quantum Algebra · Mathematics 2011-08-01 Pavel Kolesnikov