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Let $\lambda$ be a complex number in the closed unit disc $\overline{\Bbb D}$, and $\cal H$ be a separable Hilbert space with the orthonormal basis, say, ${\cal E}=\{e_n:n=0,1,2,\cdots\}$. A bounded operator $T$ on $\cal H$ is called a…

Functional Analysis · Mathematics 2014-04-11 Mark C. Ho

We show that Nichols algebras of most simple Yetter-Drinfeld modules over the projective special linear group over a finite field, corresponding to non-semisimple orbits, have infinite dimension. We spell out a new criterium to show that a…

Quantum Algebra · Mathematics 2018-06-01 Nicolás Andruskiewitsch , Giovanna Carnovale , Gastón Andrés García

This is the third in a series of works devoted to constructing virtual structure sheaves and $K$-theoretic invariants in moduli theory. The central objects of study are almost perfect obstruction theories, introduced by Y.-H. Kiem and the…

Algebraic Geometry · Mathematics 2023-09-07 Michail Savvas

This paper describes irreducible representations in category O of the rational Cherednik algebra H_c(H_3,h) associated to the exceptional Coxeter group H_3 and any complex parameter c. We compute the characters of all these representations…

Representation Theory · Mathematics 2016-08-09 Martina Balagovic , Arjun Puranik

Through a new powerful potential-theoretic analysis, this paper is devoted to discovering the geometrically equivalent isocapacity forms of Chou-Wang's Sobolev type inequality and Tian-Wang's Moser-Trudinger type inequality for the fully…

Functional Analysis · Mathematics 2014-04-15 Jie Xiao , Ning Zhang

Some special Hilbert spaces are introduced to present the class of infinitesimal operators with complete minimal non-basis family of eigenvectors. The discrete Hardy inequality plays an important role in the proposed approach. The…

Spectral Theory · Mathematics 2016-08-25 Grigory M. Sklyar , Vitalii Marchenko

This article describes the REDUCE package ZEILBERG implemented by Gregor St\"olting and the author. The REDUCE package ZEILBERG is a careful implementation of the Gosper and Zeilberger algorithms for indefinite, and definite summation of…

Classical Analysis and ODEs · Mathematics 2009-09-25 Wolfram Koepf

We develop the tools required to effectively evaluate the Bianchi rigid meromorphic cocycles introduced by Darmon-Gehrmann-Lipnowski at big ATR points, and use them to obtain the first numerical verification of the conjectured algebraicity…

Number Theory · Mathematics 2025-11-27 Lennart Gehrmann , Xavier Guitart , Marc Masdeu

We study confluence in the setting of higher-order infinitary rewriting, in particular for infinitary Combinatory Reduction Systems (iCRSs). We prove that fully-extended, orthogonal iCRSs are confluent modulo identification of…

Logic in Computer Science · Computer Science 2015-07-01 Jeroen Ketema , Jakob Grue Simonsen

This sketch argues that work of Hesselholt on the topological Hochschild homology of $\Cp$ extends, using work of Scholze and others, to define complex orientations for a version of topological Hochschild homology for rings of integers in a…

Algebraic Topology · Mathematics 2020-03-06 Jack Morava

We develop a classification theory for real-analytic hypersurfaces in $\mathbb C^2$ in the case when the hypersurface is of {\em infinite type} at the reference point. This is the remaining, not yet understood case in $\mathbb C^2$ in the…

Complex Variables · Mathematics 2019-06-28 Peter Ebenfelt , Ilya Kossovskiy , Bernhard Lamel

Techniques from Descriptive Set Theory are applied in order to study the Topological Complexity of families of operators naturally connected to ergodic operators in infinite dimensional Banach Spaces. The families of ergodic,…

General Topology · Mathematics 2009-12-31 Mohammed Yahdi

We compute the $F$-signature function of the ample cone of any nontrivial ruled surface over $\mathbb{P}^1_k$ where $k$ is an algebraically closed field of prime characteristic. As an application, we construct a Noetherian $F$-finite…

Commutative Algebra · Mathematics 2025-08-28 Seungsu Lee , Suchitra Pande , Austyn Simpson

The purpose of this paper is to study categorifications of tensor products of finite dimensional modules for the quantum group for sl(2). The main categorification is obtained using certain Harish-Chandra bimodules for the complex Lie…

Quantum Algebra · Mathematics 2007-06-13 Igor Frenkel , Mikhail Khovanov , Catharina Stroppel

Inspired by Bourqui's work on anticanonical height zeta functions on Hirzebruch surfaces, we study height zeta functions of split toric varieties with Picard rank 2 over global function fields, with respect to height functions associated…

Number Theory · Mathematics 2024-09-24 Sebastián Herrero , Tobías Martínez , Pedro Montero

We consider the group $\mathcal G$ which is the semidirect product of the group of analytic functions with values in ${\mathbb C}^*$ on the circle and the group of analytic diffeomorphisms of the circle that preserve the orientation. Then…

Differential Geometry · Mathematics 2026-01-23 Denis V. Osipov

We characterize two objects by universal property: the derived de Rham complex and Hochschild homology together with its Hochschild-Kostant-Rosenberg (HKR) filtration. This involves endowing these objects with extra structure, built on…

Algebraic Geometry · Mathematics 2026-01-21 Arpon Raksit

Using the theory infinity-categories we construct derived (dg-)categories of regular, holonomic D-modules and algebraically constructible sheaves on a complex smooth algebraic stack. We construct a natural infinity-categorical equivalence…

Algebraic Geometry · Mathematics 2013-08-28 Alexander Paulin

We supplement a very recent paper of R. Crandall concerned with the multiprecision computation of several important special functions and numbers. We show an alternative series representation for the Riemann and Hurwitz zeta functions…

Mathematical Physics · Physics 2012-03-26 Mark W. Coffey

We prove that any analytic set in $\C^n$ with a unique tangent cone at infinity is an algebraic set. We prove that the degree of a complex algebraic set in $\C^n$, which is Lipschitz normally embedded at infinity, is equal to the degree of…

Complex Variables · Mathematics 2022-01-21 L. R. G. Dias , N. R. Ribeiro