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Related papers: A modular ramified geometric Satake equivalence

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We prove a version of the twisted geometric Satake equivalence and extend the Langlands parametrization of V. Lafforgue to certain covers of reductive groups.

Algebraic Geometry · Mathematics 2026-04-07 Yifei Zhao

Formal orbifolds are defined in higher dimension. Their \'etale fundamental groups are also defined. It is shown that the fundamental groups of formal orbifolds have certain finiteness property and it is also shown that they can be used to…

Algebraic Geometry · Mathematics 2017-06-02 Manish Kumar

We characterize the quasiprojective groups that appear as fundamental groups of compact $3$-manifolds (with or without boundary). We also characterize all closed $3$-manifolds that admit good complexifications. These answer questions of…

Algebraic Geometry · Mathematics 2015-10-27 Indranil Biswas , Mahan Mj

We give a summary of joint work with Michael Thaddeus that realizes toroidal compactifcations of split reductive groups as moduli spaces of framed bundles on chains of rational curves. We include an extension of this work that covers Artin…

Algebraic Geometry · Mathematics 2017-10-18 Johan Martens

For the affine Hecke algebra of type A at roots of unity, we make explicit the correspondence between geometrically constructed simple modules and combinatorially constructed simple modules and prove the modular branching rule. The latter…

Representation Theory · Mathematics 2010-04-22 Susumu Ariki , Nicolas Jacon , Cédric Lecouvey

For the affine Hecke algebra of type A at roots of unity, we make explicit the correspondence between geometrically constructed simple modules and combinatorially constructed simple modules and prove the modular branching rule. The latter…

Representation Theory · Mathematics 2010-04-23 Susumu Ariki , Nicolas Jacon , Cédric Lecouvey

We construct a compactification of the moduli space of Drinfeld modules of rank $r$ and level $N$ as a moduli space of $A$-reciprocal maps. This is closely related to the Satake compactification, but not exactly the same. The construction…

Algebraic Geometry · Mathematics 2019-03-07 Richard Pink

We construct modular categories from Hecke algebras at roots of unity. For a special choice of the framing parameter, we recover the Reshetikhin-Turaev invariants of closed 3-manifolds constructed from the quantum groups U_q sl(N) by…

Geometric Topology · Mathematics 2013-12-10 Christian Blanchet

The works of Commichau--Grauert and Hirschowitz showed that a formal equivalence between embeddings of a compact complex manifold is convergent, if the embeddings have sufficiently positive normal bundles in a suitable sense. We show that…

Differential Geometry · Mathematics 2024-08-29 Jaehyun Hong , Jun-Muk Hwang

We obtain, for the first time, a modular many-valued semantics for combined logics, which is built directly from many-valued semantics for the logics being combined, by means of suitable universal operations over partial non-deterministic…

Logic · Mathematics 2024-05-22 Carlos Caleiro , Sérgio Marcelino

Building on the recent work of Mushaandja and Olela-Otafudu~\cite{MushaandjaOlela2025} on modular metric topologies, this paper investigates extended structural properties of modular (pseudo)metric spaces. We provide necessary and…

General Topology · Mathematics 2025-10-21 Philani Rodney Majozi

We prove that two cusps of the same dimension in the Baily-Borel compactification of some classical series of modular varieties are linearly dependent in the rational Chow group of the compactification. This gives a higher dimensional…

Algebraic Geometry · Mathematics 2020-07-29 Shouhei Ma

We relate the old and new cohomology monoids of an arbitrary monoid $M$ with coefficients in semimodules over $M$, introduced in the author's previous papers, to monoid and group extensions. More precisely, the old and new second cohomology…

K-Theory and Homology · Mathematics 2017-03-29 Alex Patchkoria

We consider the Chow ring with rational coefficients of the Jacobian of a curve. Assume D is a divisor in a base point free g^r_d of the curve such that the canonical divisor K is a multiple of the divisor D. We find relations between…

Algebraic Geometry · Mathematics 2007-06-20 Baohua Fu , Fabien Herbaut

Starting from the results in math.DG:1212.3161 we prove that for a given Bianchi group, certain natural coefficent modules and a lot of sequences of congruence subgroups of the size of the torsion subgroup of the first homology grows…

Geometric Topology · Mathematics 2018-02-14 Jean Raimbault

We study Hecke operators on moduli spaces of ramified $G$-bundles using the combinatorial language of Hecke graphs. We introduce a general notion of $\mathcal H$-ramification in the spirit of parahoric ramification, which depends on a…

Algebraic Geometry · Mathematics 2026-05-14 Rudrendra Kashyap , Vladyslav Zveryk

We correct the faulty formulas given in a previous article and we compute the defect group for the Iwasawa $\lambda$ invariants attached to the S-ramified T-decomposed a belian pro-${\ell}$-extensions on the Z${\ell}$-cyclotomic extensionof…

Number Theory · Mathematics 2023-12-27 Jean-François Jaulent

Groups associated to surfaces isogenous to a higher product of curves can be characterised by a purely group-theoretic condition, which is the existence of a so-called ramification structure. G\"{u}l and Uria-Albizuri showed that quotients…

Group Theory · Mathematics 2022-07-15 Elena Di Domenico , Şükran Gül , Anitha Thillaisundaram

In this paper, we introduce and develop the concept of \emph{ramification} in a given modulus. We study some properties in relation to this concept and it's connection to some important problems in mathematics, particularly the Goldbach…

Number Theory · Mathematics 2026-03-10 Theophilus Agama

The local Tamagawa number conjecure, first formulated by Fontaine and Perrin-Riou, expresses the compatibility of the (global) Tamagawa number conjecture on motivic $L$-functions with the functional equation. The local conjecture was proven…

Number Theory · Mathematics 2016-09-07 Jay Daigle , Matthias Flach