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We construct canonical Hasse invariants for arbitrary Shimura varieties of Hodge type for the mu-ordinary locus.

Algebraic Geometry · Mathematics 2018-01-19 Jean-Stefan Koskivirta , Torsten Wedhorn

We first give a relative flexible process to construct torsion cohomology classes for Shimura varieties of Kottwitz-Harris-Taylor type with coefficient in a non too regular local system. We then prove that associated to each torsion…

Number Theory · Mathematics 2017-01-03 Pascal Boyer

In this note we are interested in labelling the irreducible representations of non-semisimple specialisations of Hecke algebras of complex reflection groups. We will use category O for the rational Cherednik algebra and the KZ functor…

Representation Theory · Mathematics 2011-07-19 Maria Chlouveraki , Iain Gordon , Stephen Griffeth

We investigate from an algebraic and topological point of view the minimal prime spectrum of a universal algebra, considering the prime congruences w.r.t. the term condition commutator. Then we use the topological structure of the minimal…

Rings and Algebras · Mathematics 2024-09-04 George Georgescu , Leonard Kwuida , Claudia Mureşan

The Hecke orbit conjecture asserts that every prime-to-$p$ Hecke orbit in a Shimura variety is dense in the central leaf containing it. In this paper, we prove the conjecture for certain irreducible components of Newton strata in Shimura…

Number Theory · Mathematics 2020-06-15 Luciena Xiao Xiao

A general structure theorem on higher order invariants is proven. For an arithmetic group, the structure of the corresponding Hecke module is determined. It is shown that the module does not contain any irreducible submodule. This explains…

Number Theory · Mathematics 2017-09-04 Anton Deitmar

We generalize the phenomenon of continuation from complex anal- ysis to locally operator monotone functions. Along the lines of the egde-of- the-wedge theorem, we prove continuations exist dependent only on geometric features of the domain…

Functional Analysis · Mathematics 2013-01-09 J. E. Pascoe

We construct Eigenvarieties for PEL Shimura varieties which interpolate cuspidal, finite slope automorphic forms for PEL Shimura varieties appearing as global sections of (coherent) automorphic sheaves, under the hypothesis that the primes…

Number Theory · Mathematics 2019-09-16 Valentin Hernandez

We propose a method for computing approximations to the Hecke eigenvalues of a classical modular eigenform $f$, based on the analytic evaluation of $f$ at points in the upper half plane. Our approach works with arbitrary precision, allows…

Number Theory · Mathematics 2019-10-03 David Armendariz , Owen Colman , Nicolas Coloma , Alexandru Ghitza , Nathan C. Ryan , Dario Teran

We show that the action of Hecke operators away from $p$ on the space of ($p$-adic) overconvergent modular forms is ($p$-adically) locally analytic in a certain sense. As a corollary, the action of the Hecke algebra can be extended…

Number Theory · Mathematics 2026-03-31 Lue Pan

We show that the moduli spaces of Scholze's $p$-adic shtukas with framing satisfy a $p$-adic rigid analytic version of Borel's extension theorem. In particular, this holds for local Shimura varieties, for all local Shimura data…

Number Theory · Mathematics 2026-03-04 Abhishek Oswal , Georgios Pappas

Let f be a newform, as specified by its Hecke eigenvalues, on a Shimura curve X. We describe a method for evaluating f. The most interesting case is when X arises as a compact quotient of the hyperbolic plane, so that classical q-expansions…

Number Theory · Mathematics 2018-01-29 Paul D. Nelson

In this paper we study homological properties of modules over an affine Hecke algebra H. In particular we prove a comparison result for higher extensions of tempered modules when passing to the Schwartz algebra S, a certain topological…

Representation Theory · Mathematics 2009-05-20 Eric Opdam , Maarten Solleveld

We give a new definition -- and in some cases, a new construction -- of integral canonical models of Shimura varieties that uses the notion of an aperture appearing in work of Gardner--Madapusi on some conjectures of Drinfeld. This applies…

Number Theory · Mathematics 2026-04-29 Keerthi Madapusi , Alex Youcis

In this paper we prove: Theorem 1. Let $\mathcal{K}$ be an abstract elementary class which satisfies the joint embedding and amalgamation properties. Suppose $\lambda>\mu\geq LS(\mathcal{K})$ and $\theta$ is a limit ordinal $<\lambda^+$. If…

Logic · Mathematics 2015-12-31 Monica M. VanDieren

We study the locally analytic theory of infinite level local Shimura varieties. As a main result, we prove that in the case of a duality of local Shimura varieties, the locally analytic vectors of different period sheaves at infinite level…

Number Theory · Mathematics 2026-05-12 Gabriel Dospinescu , Juan Esteban Rodríguez Camargo

We prove that Shimura varieties admit integral canonical models for sufficiently large primes. In the case of abelian-type Shimura varieties, this recovers work of Kisin-Kottwitz for sufficiently large primes. We also prove the existence of…

Number Theory · Mathematics 2025-02-26 Benjamin Bakker , Ananth N Shankar , Jacob Tsimerman

We prove: Main Theorem: Let $\mathcal{K}$ be an abstract elementary class satisfying the joint embedding and the amalgamation properties with no maximal models of cardinality $\mu$. Let $\mu$ be a cardinal above the the L\"owenheim-Skolem…

Logic · Mathematics 2015-12-14 Rami Grossberg , Monica VanDieren , Andres Villaveces

We extend methods of Greenberg and the author to compute in the cohomology of a Shimura curve defined over a totally real field with arbitrary class number. Via the Jacquet-Langlands correspondence, we thereby compute systems of Hecke…

Number Theory · Mathematics 2015-03-17 John Voight

Let $G$ be a split reductive group over a finite field $k$. In this note we study the space $V$ of finitely supported functions on the set of isomorphism classes $G$-bundles on the projective line ${\mathbb P}^1$ endowed with a…

Representation Theory · Mathematics 2023-12-13 Alexander Braverman , David Kazhdan