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The purpose of this talk is to present an (apparently) new way to look at the intersection complex of a singular variety over a finite field, or, more generally, at the intermediate extension functor on pure perverse sheaves, and an…

Number Theory · Mathematics 2018-06-27 Sophie Morel

We prove a conjecture of Zuber on the signature of intersection froms associated with affine algebras of type A.

Quantum Algebra · Mathematics 2015-06-26 Feng Xu

We describe a singular variety associated to the smallest degree Pinchuk map and calculate its intersection homology. The result describes the geometry at infinity of the Pinchuk's map.

Algebraic Geometry · Mathematics 2023-08-28 Nguyen Thi Bich Thuy

We prove an analogue of the classical Ax-Lindemann theorem in the context of compact Shimura varieties. Our work is motivated by J. Pila's strategy for proving the Andr\'e-Oort conjecture unconditionally

Number Theory · Mathematics 2015-01-14 Emmanuel Ullmo , Andrei Yafaev

We study effective versions of unlikely intersections of images of torsion points of elliptic curves on the projective line.

Algebraic Geometry · Mathematics 2017-06-07 Fedor Bogomolov , Hang Fu , Yuri Tschinkel

In this paper we discuss the geometry of affine Deligne Lusztig varieties with very special level structure, determining their dimension and connected and irreducible components. As application, we prove the Grothendieck conjecture for…

Algebraic Geometry · Mathematics 2020-12-21 Paul Hamacher

Using our recent results on the algebraicity of the Hodge locus for variations of Hodge structures of level at least $3$, we improve the results of Lawrence-Venkatesh in direction of the refined Bombieri-Lang conjecture.

Algebraic Geometry · Mathematics 2022-10-11 Gregorio Baldi , Bruno Klingler , Emmanuel Ullmo

This survey presents recent developments concerning the Shafarevich conjecture, non-abelian Hodge theories, hyperbolicity, and the topology of complex algebraic varieties, as well as the interplay among these areas. More precisely, we…

Algebraic Geometry · Mathematics 2026-01-01 Ya Deng

We explore an analogue of the Andr\'e-Oort conjecture for subvarieties of Drinfeld modular varieties. The conjecture states that a subvariety $X$ of a Drinfeld modular variety contains a Zariski-dense set of complex multiplication (CM)…

Number Theory · Mathematics 2009-03-02 Florian Breuer

We prove two formulas in the style of the Gross-Zagier theorem, relating derivatives of L-functions to arithmetic intersection pairings on a unitary Shimura variety. We also prove a special case of Colmez's conjecture on the Faltings…

Number Theory · Mathematics 2020-02-25 Jan Bruinier , Benjamin Howard , Stephen S. Kudla , Michael Rapoport , Tonghai Yang

Zilber's Exponential Algebraic Closedness conjecture (also known as Zilber's Nullstellensatz) gives conditions under which a complex algebraic variety should intersect the graph of the exponential map of a semiabelian variety. We prove the…

Complex Variables · Mathematics 2024-01-24 Vahagn Aslanyan , Jonathan Kirby , Vincenzo Mantova

In this paper we study the cohomology of PEL-type Rapoport-Zink spaces associated to unramified unitary similitude groups over $\Q_p$ in an odd number of variables. We extend the results of Kaletha-Minguez-Shin-White to construct a local…

Number Theory · Mathematics 2021-07-01 Alexander Bertoloni Meli , Kieu Hieu Nguyen

We prove the Zilber--Pink conjecture for curves in $Y(1)^n$ whose Zariski closure in $(\mathbb{P}^1)^n$ passes through the point $(\infty, \ldots, \infty)$, going beyond the asymmetry condition of Habegger and Pila. Our proof is based on a…

Number Theory · Mathematics 2025-03-04 Christopher Daw , Martin Orr

This is the first in a series of papers aimed at studying families of G-functions associated to $1$-parameter families of abelian schemes. In particular, the construction of relations, in both the archimedean and non-archimedean settings,…

Number Theory · Mathematics 2025-10-15 Georgios Papas

Let F : P^n --> P^n be a morphism of degree d > 1 defined over C. The dynamical Mordell--Lang conjecture says that the intersection of an orbit O_F(P) and a subvariety X of P^n is usually finite. We consider the number of linear…

Number Theory · Mathematics 2011-09-02 Joseph H. Silverman , Bianca Viray

Using class field theory, we prove a restriction on the intersection of the maximal abelian extensions associated with different number fields. This restriction is then used to improve a result of Rosen and Silverman about the linear…

Number Theory · Mathematics 2017-11-28 Lars Kühne

We study the local and global intersection cohomology of the intersection of two Schubert varieties in a flag manifold. In this version some new references are added.

Algebraic Geometry · Mathematics 2023-07-25 M. Dyer , G. Lusztig

We formulate uncertainty relations for arbitrary finite number of incompatible observables. Based on the sum of variances of the observables, both Heisenberg-type and Schr\"{o}dinger-type uncertainty relations are provided. These new lower…

Quantum Physics · Physics 2016-08-23 Bin Chen , Ning-Ping Cao , Shao-Ming Fei , Gui-Lu Long

Given two varieties V,W in the n-fold product of modular curves, we answer affirmatively a question (formulated by Shou-Wu Zhang's AIM group) on whether the set of points in V that are Hecke translations of some point on W is dense in V. We…

Algebraic Geometry · Mathematics 2023-05-12 Asvin G

We prove a $p$-adic analogue of the Andr\'{e}-Oort conjecture for subvarieties of the universal abelian varieties containing a dense set of special points. Let $g$ and $n$ be integers with $n \geq 3$ and $p$ a prime number not dividing $n$.…

Algebraic Geometry · Mathematics 2009-11-10 Thomas Scanlon