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We study the spectrum of the cohomology rings of cocommutative Hopf superalgebras, restricted and non-restricted Lie superalgebras, and finite supergroup schemes. We also investigate support varieties in these settings and demonstrate that…

Representation Theory · Mathematics 2019-03-01 Christopher M. Drupieski , Jonathan R. Kujawa

In this paper, we will address broader concepts for Dunford-Pettis operators, presenting new classes and results that correlate this class with others already well-studied in the literature, as well as an approach outside the origin. We…

Functional Analysis · Mathematics 2026-04-02 Joilson Ribeiro , Fabricio Santos

We formulate a new class of fractional difference and sum operators, study their fundamental properties, and find their discrete Laplace transforms. The method depends on iterating the fractional sum operators corresponding to fractional…

Classical Analysis and ODEs · Mathematics 2019-01-25 Thabet Abdeljawad , Arran Fernandez

We extend the De Giorgi--Nash--Moser theory to superposition operators of mixed fractional operators. In particular, we investigate several regularity properties for this class of operators. We establish the Caccioppoli-type inequality with…

Analysis of PDEs · Mathematics 2026-05-18 Souvik Bhowmick , Sekhar Ghosh , Vishvesh Kumar , R. Lakshmi

Dzhumadil'daev has classified all tensor module extensions of $diff(N)$, the diffeomorphism algebra in $N$ dimensions, and its subalgebras of divergence free, Hamiltonian, and contact vector fields. I review his results using explicit…

Mathematical Physics · Physics 2007-05-23 T. A. Larsson

We show that a bi-flat F-structure $(\nabla,\circ,e,\nabla^*,*,E)$ on a manifold $M$ defines a differential bicomplex $(d_{\nabla},d_{E\circ\nabla^*})$ on forms with value on the tangent sheaf of the manifold. Moreover, the sequence of…

Differential Geometry · Mathematics 2024-05-22 Alessandro Arsie , Paolo Lorenzoni

Following arXiv:0909.5586 and arXiv:1411.4125, we construct two super-extensions of the usual tensor algebra through the super-actions of symmetric groups and Hecke algebras respectively. For each extension, we consider a special type of…

Representation Theory · Mathematics 2025-11-18 Run-Qiang Jian , Xianfa Wu

We consider some unitary representations of infinite dimensional Lie algebras motivated by string theory on AdS_3. These include examples of two kinds: the A,D,E type affine Lie algebras and the N=4 superconformal algebra. The first…

High Energy Physics - Theory · Physics 2009-10-31 Oleg Andreev

We propose an outgrowth of the expansion method introduced by de Azcarraga et al. [Nucl. Phys. B 662 (2003) 185]. The basic idea consists in considering the direct product between an abelian semigroup S and a Lie algebra g. General…

High Energy Physics - Theory · Physics 2008-11-26 Fernando Izaurieta , Eduardo Rodríguez , Patricio Salgado

There are various reasons why a naive analog of the Maeda conjecture has to fail for Drinfeld cusp forms. Focussing on double cusp forms and using the link found by Teitelbaum between Drinfeld cusp forms and certain harmonic cochains, we…

Number Theory · Mathematics 2021-03-25 Gebhard Boeckle , Peter Mathias Graef , Rudolph Perkins

This paper generalize [7](math.GT/0601291): We construct new links invariants from g, a type I basic classical Lie superalgebra. The construction uses the existence of an unexpected replacement of the vanishing quantum dimension of typical…

Geometric Topology · Mathematics 2007-10-01 Nathan Geer , Bertrand Patureau-Mirand

We obtain a closed form polynomial expression for certain coefficients of Drinfeld-Goss double-cuspidal modular forms which are eigenforms for the degree one Hecke operators with power eigenvalues, and we use those formulas to prove…

Number Theory · Mathematics 2017-05-30 Ahmad El-Guindy

We investigate the notion of real form of complex Lie superalgebras and supergroups, both in the standard and graded version. Our functorial approach allows most naturally to go from the superalgebra to the supergroup and retrieve the real…

Rings and Algebras · Mathematics 2023-03-21 Rita Fioresi , Fabio Gavarini

We study the structure of the vector space of Drinfeld quasi-modular forms for congruence subgroups. We provide representations as polynomials in the false Eisenstein series with coefficients in the space of Drinfeld modular forms (the…

Number Theory · Mathematics 2025-11-14 Andrea Bandini , Maria Valentino , Sjoerd de Vries

This paper focuses on recent works on McKean-Vlasov stochastic differential equations (SDEs) involving singular coefficients. After recalling the classical framework, we review existing recent literature depending on the type of…

Probability · Mathematics 2025-08-01 Luca Bondi , Elena Issoglio , Francesco Russo

Based on large N Chern-Simons/topological string duality, in a series of papers, J.M.F. Labastida, M. Marino, H. Ooguri and C. Vafa conjectured certain remarkable new algebraic structure of link invariants and the existence of infinite…

Quantum Algebra · Mathematics 2009-11-10 Kefeng Liu , Pan Peng

This paper is based on the lectures given by the first author at Harvard in February and March, 2009. It begins with an introduction to the classical p-adic theory of the Macdonald, Matsumoto and Whittaker functions. Its major directions…

Quantum Algebra · Mathematics 2012-10-30 Ivan Cherednik , Xiaoguang Ma

In previous work we have shown that classical approximation theory provides methods for the systematic construction of inverse-closed smooth subalgebras. Now we extend this work to treat inverse-closed subalgebras of ultradifferentiable…

Functional Analysis · Mathematics 2012-01-17 Andreas Klotz

We construct a duality functor in the category of continuous representations of the Lie superalgebra E(4,4), the only exceptional simple linearly compact Lie superalgebra, for which it wasn't known. This is achieved by constructing a Lie…

Representation Theory · Mathematics 2023-03-31 Nicoletta Cantarini , Fabrizio Caselli , Victor Kac

In this note, we interpret Leibniz algebras as differential graded Lie algebras. Namely, we consider two functors from the category of Leibniz algebras to that of differential graded Lie algebras and show that they naturally give rise to…

K-Theory and Homology · Mathematics 2019-10-10 Jacob Mostovoy