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This note reviews the authors' approach to Fujino's conjecture, i.e. the injectivity theorem for lc pairs on compact K\"ahler manifolds, via the use of adjoint ideal sheaves coupled with the associated residue computations in their previous…

复变函数 · 数学 2024-11-12 Tsz On Mario Chan , Young-Jun Choi

Using a mixed-characteristic incarnation of fusion, we prove an analog of Nekov\'a\v{r}-Scholl's plectic conjecture for local Shimura varieties. We apply this to obtain results on the plectic conjecture for (global) Shimura varieties after…

数论 · 数学 2025-08-01 Siyan Daniel Li-Huerta

In the geometric situation of the simple Shimura varieties of Kottwitz studied in Harris and Taylor's book, we describe the monodromy filtration of the vanishing cycles complex and the spectral sequence associated to it. We prove in…

代数几何 · 数学 2018-09-03 Pascal Boyer

In this article, we give a bound for the wild ramification of the monodromy action on the nearby cycles complex of a locally constant \'etale sheaf on the generic fiber of a smooth scheme over an equal characteristic trait in terms of Abbes…

代数几何 · 数学 2022-04-27 Haoyu Hu , Jean-Baptiste Teyssier

In this paper, for any Shimura datum $(G,\mathcal{D})$ satisfying reasonable conditions so that many interesting cases satisfy, we prove some finiteness theorems for any graded vector space consisting of automorphic forms on $\mathcal{D}$…

代数几何 · 数学 2024-12-10 Takuya Yamauchi

A theorem of the Kolmogorov--Chentsov type is proved for random fields on a Riemannian manifold.

概率论 · 数学 2016-07-21 Annika Lang , Jürgen Potthoff , Martin Schlather , Dimitri Schwab

For all simple and finite extension of a valued field, we prove that its defect is the product of the effective degrees of the complete set of key polynomials associated. As a consequence, we obtain a local uniformization theorem for…

代数几何 · 数学 2014-12-25 Jean-Christophe San Saturnino

As an application of P. Delgine's theorem (Esnault and Kerz in Acta Math. Vietnam. 37:531-562, 2012) on a finiteness of $l$-adic sheaves on a variety over a finite field, we show the finiteness of \'etale coverings of such a variety with…

数论 · 数学 2016-12-12 Toshiro Hiranouchi

For K and L two l-adic perverse sheaves on the one-dimensional torus over the algebraic closure of a finite field, we show that the local monodromies of their convolution K*L at its points of non-smoothness is completely determined by the…

数论 · 数学 2011-06-08 Antonio Rojas-León

In this paper we show that the six functor formalism for sheaves on locally compact Hausdorff topological spaces, as developed for example in Kashiwara and Schapira's book Sheaves on Manifolds, can be extended to sheaves with values in any…

代数拓扑 · 数学 2025-10-06 Marco Volpe

In this paper we introduce the concept of singular Finsler foliation, which generalizes the concepts of Finsler actions, Finsler submersions and (regular) Finsler foliations. We show that if $\mathcal{F}$ is a singular Finsler foliation on…

微分几何 · 数学 2019-09-11 Marcos M. Alexandrino , Benigno O. Alves , Miguel Angel Javaloyes

We give a group theoretic definition of "local models" as sought after in the theory of Shimura varieties. These are projective schemes over the integers of a $p$-adic local field that are expected to model the singularities of integral…

代数几何 · 数学 2012-11-27 G. Pappas , X. Zhu

We develop sheaf-theoretic methods to deal with non-smooth objects in symplectic geometry. We show the completeness of a derived category of sheaves with respect to the interleaving distance and construct a sheaf quantization of a…

辛几何 · 数学 2024-03-14 Tomohiro Asano , Yuichi Ike

We present a result which can be used for stratifications with conical singularities to deduce that a perverse sheaf (in particular, an intersection homology sheaf) has reducible characteristic variety, given a hypothesis on the monodromy…

代数几何 · 数学 2007-05-23 Tom Braden

Let S be a K3 surface and Aut D(S) the group of auto-equivalences of the derived category of S. We construct a natural representation of Aut D(S) on the cohomology of all moduli spaces of stable sheaves (with primitive Mukai vectors) on S.…

代数几何 · 数学 2016-09-07 Eyal Markman

We prove a geometric local constancy theorem for affine Springer fibers in families of close local fields. Consequently, stable orbital integrals are locally constant in these families, and both the base change fundamental lemma and the…

数论 · 数学 2026-03-20 Sebastian Bartling , Kazuhiro Ito

Using sheaf theory, I introduce a continuous theory of persistence for mappings between compact manifolds. In the case both manifolds are orientable, the theory holds for integer coefficients. The sheaf introduced here is stable to…

代数拓扑 · 数学 2013-10-09 Amit Patel

For an abelian category and a distinguished object with a graded endomorphism ring a necessary and sufficient criterion is given so that the category is equivalent to the abelian quotient of the category of finitely presented graded modules…

代数几何 · 数学 2024-06-03 Henning Krause

We prove a sheaf-theoretic derived-category generalization of Greenlees-May duality (a far-reaching generalization of Grothendieck's local duality theorem): for a quasi-compact separated scheme X and a "proregular" subscheme Z---for…

alg-geom · 数学 2008-02-03 Leovigildo Alonso , Ana Jeremías , Joseph Lipman

A reduced divisor on a nonsingular variety defines the sheaf of logarithmic 1-forms. We introduce a certain coherent sheaf whose double dual coincides with this sheaf. It has some nice properties, for example, the residue exact sequence…

代数几何 · 数学 2007-05-23 Igor V. Dolgachev