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A Hilbert module is a generalisation of a Hilbert space for which the inner product takes its values in a C*-algebra instead of the complex numbers. We use the bracket product to construct some Hilbert modules over a group C*-algebra which…

Functional Analysis · Mathematics 2007-05-23 Peter John Wood

The main purpose of the paper is to establish new tools in the study of $\mathcal{O}^\mathfrak{p}$. We introduce the Jantzen coefficients of generalized Verma modules. It comes from the Jantzen's simplicity criteria for generalized Verma…

Representation Theory · Mathematics 2022-09-27 Wei Xiao , Ailin Zhang

Let $X$ be a smooth geometrically connected projective curve over the field of fractions of a discrete valuation ring $R$, and $\mathfrak{m}$ a modulus on $X$, given by a closed subscheme of $X$ which is geometrically reduced. The…

Algebraic Geometry · Mathematics 2024-05-08 Bruce W. Jordan , Kenneth A. Ribet , Anthony J. Scholl

In this paper wavelet functions are introduced in the context of $q$-theory. We precisely extend the case of Bessel and $q$-Bessel wavelets to the generalized $q$-Bessel wavelets. Starting from the $(q,v)$-extension ($v=(\alpha,\beta)$) of…

Functional Analysis · Mathematics 2017-05-02 Imen Rezgui , Anouar Ben Mabrouk

Fabian Januszewski and the author established the theory of twisted D-modules over general base schemes. In this short note, we construct a $K$-invariant positive exhaustive filtration on the globalization of the twisted D-module on a…

Algebraic Geometry · Mathematics 2024-05-10 Takuma Hayashi

We develop a general technique of constructing new irreducible weight modules for any affine Kac-Moody algebra using the parabolic induction, in the case when the Levi factor of a parabolic subalgebra is infinite-dimensional and the central…

Representation Theory · Mathematics 2022-01-20 Marcela Guerrini , Iryna Kashuba , Oscar Morales , André de Oliveira , Fernando Junior Santos

The classical parabolic induction functor is a fundamental tool on the representation theoretic side of the Langlands program. In this article, we study its derived version. It was shown by the second author that the derived category of…

Representation Theory · Mathematics 2020-09-09 Sarah Scherotzke , Peter Schneider

In this paper we study a group theoretical generalization of the well-known Gauss's formula that uses the generalized Euler's totient function introduced in [11].

Group Theory · Mathematics 2016-02-22 Marius Tarnauceanu

Jir\'asko introduced the concepts of L-injective module as a generalization of injective module. The aim of this paper is to study L-injective modules and some related concepts.

Rings and Algebras · Mathematics 2017-09-13 Akeel Ramadan Mehdi

This article addresses linear hyperbolic partial differential equations and pseudodifferential equations with strongly singular coefficients and data, modelled as members of algebras of generalised functions. We employ the recently…

Analysis of PDEs · Mathematics 2011-04-18 Claudia Garetto , Michael Oberguggenberger

We present a graded-geometric approach to modular classes of Lie algebroids and their generalizations, introducing in this setting an idea of relative modular class of a Dirac structure for a certain type of Courant algebroids, called…

Differential Geometry · Mathematics 2017-01-17 Janusz Grabowski

We study projective functors (i.e. direct summands of compositions of translations through walls) for parabolic versions of $\cO$ as well as for integral regular blocks outside the critical hyperplanes in the symmetrizable Kac-Moody case.…

Representation Theory · Mathematics 2007-05-23 Catharina Stroppel

Let $P,Q$ be standard parabolic subgroups of a $p$-adic reductive group $G$. We study the smooth dual of the filtration on a parabolically induced module arising from the geometric lemma associated to the cosets $P\setminus G/Q$. We prove…

Representation Theory · Mathematics 2026-01-05 Kei Yuen Chan

We give some properties of parabolic inductions and their adjoint functors for pro-$p$-Iwahori Hecke algebras.

Representation Theory · Mathematics 2016-12-06 Noriyuki Abe

The paper is devoted to construction of some closed inductive sequence of models of the generalized second-order Dedekind theory of real numbers with exponentially increasing powers. These models are not isomorphic whereas all models of the…

Logic · Mathematics 2019-07-08 Valeriy K. Zakharov , Timofey V. Rodionov

This paper concerns diffraction-tomographic reconstruction of an object characterized by its scattering potential. We establish a rigorous generalization of the Fourier diffraction theorem in arbitrary dimension, giving a precise relation…

Numerical Analysis · Mathematics 2026-03-30 Clemens Kirisits , Michael Quellmalz , Eric Setterqvist

We study the properties of a generalized metallic, a generalized product and a generalized complex structure induced on the generalized tangent bundle of $M$ by a metallic Riemannian structure $(J,g)$ on $M$, providing conditions for their…

Differential Geometry · Mathematics 2025-08-04 Adara M. Blaga , Antonella Nannicini

The theory of representations of quivers and of their preprojective algebras are reviewed. In particular, moduli spaces of representations of these algebras, quiver varieties and reflection functor are described. The proof that the…

Mathematical Physics · Physics 2019-02-11 A. Silantyev

Let G be a semi simple linear algebraic group over a field of characteristic zero and let V be a finite dimensional irreducible G-module with highest weight vector v. Let P in G be the parabolic subgroup fixing v and let g=Lie(G). We get a…

Algebraic Geometry · Mathematics 2020-11-13 Helge Øystein Maakestad

Let $\mathcal{X}$ be a class of $R$-modules. In this paper, we investigate \;$\mathcal{X}$-(f.g.)injective ((f.g.)projective) and DG-$\mathcal{X}$-injective (projective) complexes which are generalizations of injective (projective) and…

Rings and Algebras · Mathematics 2016-08-11 Tahire \" Ozen , Emine Yıldırım