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We study some aspects of conjugation and descent in the context of the irregular Riemann-Hilbert correspondence of D'Agnolo-Kashiwara. First, we give a proof of the fact that Kashiwara's conjugation functor for holonomic D-modules is…

Algebraic Geometry · Mathematics 2025-03-25 Andreas Hohl

In this paper, we will explain a relation between [Thm. 9.5.3, Andrea D'Agnolo and Masaki Kashiwara, Riemann-Hilbert correspondence for holonomic D-modules, 2016] and [Thm. 6.3, Masaki Kashiwara, Riemann-Hilbert correspondence for irregular…

Algebraic Geometry · Mathematics 2023-10-31 Yohei Ito

In [arXiv:2109.13991], the author explained a relation between enhanced ind-sheaves and enhanced subanalytic sheaves. In this paper, we shall define C-constructability for enhanced subanalytic sheaves which was announced in…

Algebraic Geometry · Mathematics 2023-10-31 Yohei Ito

In this paper we define specialization and microlocalization for subanalytic sheaves. Applying these functors to the sheaves of tempered and Whytney holomorphic functions we get a unifying description of tempered and formal…

Algebraic Geometry · Mathematics 2014-01-07 Luca Prelli

On a complex manifold, the embedding of the category of regular holonomic D-modules into that of holonomic D-modules has a left quasi-inverse functor $\mathcal{M}\mapsto\mathcal{M}_{\mathrm{reg}}$, called regularization. Recall that…

Algebraic Geometry · Mathematics 2021-07-13 Andrea D'Agnolo , Masaki Kashiwara

These three lectures present some fundamental and classical aspects of microlocal analysis. Starting with the Sato's microlocalization functor and the microsupport of sheaves, we then construct a microlocal analogue of the Hochschild…

Algebraic Geometry · Mathematics 2013-12-18 Pierre Schapira

This is a survey paper on the Riemann-Hilbert correspondence on (irregular) holonomic D-modules, based on the 16-th Takagi lecture (2015/11/28). In this paper, we use subanalytic sheaves, an analogous notion to the one of indsheaves.

Algebraic Geometry · Mathematics 2015-12-25 Masaki Kashiwara

This is an announcement of a long paper in progress. On a locally compact space, we introduce the stack of ind-sheaves (ind-objects of the category of sheaves with compact support) and construct the analogous of the usual six operations on…

Algebraic Geometry · Mathematics 2007-05-23 Masaki Kashiwara , Pierre Schapira

The Riemann-Hilbert correspondence embeds the triangulated category of (not necessarily regular) holonomic D-modules into that of $\mathbb R$-constructible enhanced ind-sheaves. The source category has a standard t-structure. Here, we…

Algebraic Geometry · Mathematics 2019-07-25 Andrea D'Agnolo , Masaki Kashiwara

In this paper, we reprove the Riemann-Hilbert correspondence for regular holonomic D-modules of [M. Kashiwara, Publ. Res. Inst. Math. Sci., 1984] (see also [Z. Mebkhout, Compositio Math., 1984.]) by using the irregular Riemann-Hilbert…

Algebraic Geometry · Mathematics 2023-01-04 Yohei Ito

In this paper we extend the notion of specialization functor to the case of several closed submanifolds satisfying some suitable conditions. Applying this functor to the sheaf of Whitney holomorphic functions we construct different kinds of…

Algebraic Geometry · Mathematics 2013-03-14 Naofumi Honda , Luca Prelli

For any holomorphic function $f\colon X\to \mathbb{C}$ on a complex manifold $X$, we define and study moderate growth and rapid decay objects associated to an enhanced ind-sheaf on $X$. These will be sheaves on the real oriented blow-up…

Algebraic Geometry · Mathematics 2023-07-17 Brian Hepler , Andreas Hohl

Let X be a C-infinity manifold. We construct a microlocalization functor $\mu_X$ from the derived category of bounded complexes of ind-sheaves on X to the one on the cotangent bundle of X. This functor generalizes the classical theory of…

Algebraic Geometry · Mathematics 2007-05-23 M. Kashiwara , Pierre Schapira , F. Ivorra , I. Waschkies

The subject of this paper is an algebraic version of the irregular Riemann-Hilbert correspondence which was mentioned in [arXiv:1910.09954] by the author. In particular, we prove an equivalence of categories between the triangulated…

Algebraic Geometry · Mathematics 2020-06-26 Yohei Ito

Hilbert specialization is an important tool in Field Arithmetic and Arithmetic Geometry, which has usually been intended for polynomials, hence hypersurfaces, and at scalar values. In this article, first, we extend this tool to prime…

Number Theory · Mathematics 2021-04-13 Angelo Iadarola

The concept of ``multi-microlocalization'' was introduced to extend the usual microlocal sheaf theory to a more general scope. This paper aims to further extend this theory by exploring advanced topics. One is a stalk formula for…

Analysis of PDEs · Mathematics 2024-12-02 Ryosuke Sakamoto

We investigate global microlocal properties of localization operators and Shubin pseudodifferential operators. The microlocal regularity is measured in terms of a scale of Shubin-type Sobolev spaces. In particular, we prove microlocality…

Analysis of PDEs · Mathematics 2015-08-24 René Schulz , Patrik Wahlberg

The notion of microsupport and regularity for ind-sheaves was introduced by M. Kashiwara and P. Schapira in "Microlocal study of ind-sheaves I: microsupport and regularity". In this paper we study the behaviour of the microsupport under…

Algebraic Geometry · Mathematics 2007-05-23 Ana Rita Martins

The classical Riemann-Hilbert correspondence establishes an equivalence between the triangulated category of regular holonomic D-modules and that of constructible sheaves. In this paper, we prove a Riemann-Hilbert correspondence for…

Algebraic Geometry · Mathematics 2019-07-25 Andrea D'Agnolo , Masaki Kashiwara

We study Betti structures in the solution complexes of confluent hypergeometric equations. We use the framework of enhanced ind-sheaves and the irregular Riemann-Hilbert correspondence of D'Agnolo-Kashiwara. The main result is a group…

Algebraic Geometry · Mathematics 2022-01-24 Davide Barco , Marco Hien , Andreas Hohl , Christian Sevenheck
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