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We give a criterion for maps on ultrametric spaces to be surjective and to preserve spherical completeness. We show how Hensel's Lemma and the multi-dimensional Hensel's Lemma follow from our result. We give an easy proof that the latter…

Commutative Algebra · Mathematics 2013-04-02 Franz-Viktor Kuhlmann

We prove a few uniform versions of the Mordell-Lang Conjecture and of the Shafarevich Conjecture for curves over function fields and their rational points. The main focus is on function fields having high transcendence degree over the…

Algebraic Geometry · Mathematics 2007-05-23 Lucia Caporaso

We show the derived invariance of various geometric invariants of smooth complex projective varieties governed by the Albanese map, including the relative canonical ring and the class of the relative canonical model in a suitable variant of…

Algebraic Geometry · Mathematics 2023-03-07 Federico Caucci , Luigi Lombardi , Giuseppe Pareschi

We investigate properties of the Albanese map and the fundamental group of a complex projective variety with many rational points over some function field, and prove that every linear quotient of the fundamental group of such a variety is…

Algebraic Geometry · Mathematics 2021-08-23 Ariyan Javanpeykar , Erwan Rousseau

We show that for each algebraic space that is separated and of finite type over a field, and whose affinization is connected and reduced, there is a universal morphism to a para-abelian variety. The latter are schemes that acquire the…

Algebraic Geometry · Mathematics 2023-08-01 Stefan Schröer

We give an alternative proof of Faltings's theorem (Mordell's conjecture): a curve of genus at least two over a number field has finitely many rational points. Our argument utilizes the set-up of Faltings's original proof, but is in spirit…

Number Theory · Mathematics 2019-10-29 Brian Lawrence , Akshay Venkatesh

We prove in this paper the Ax-Schanuel conjecture for all admissible variations of mixed Hodge structures.

Number Theory · Mathematics 2023-03-10 Ziyang Gao , Bruno Klingler

We give a construction of quasiminimal fields equipped with pseudo-analytic maps, generalising Zilber's pseudo-exponential function. In particular we construct pseudo-exponential maps of simple abelian varieties, including…

Logic · Mathematics 2018-06-20 Martin Bays , Jonathan Kirby

Faltings proved that there are finitely many abelian varieties of genus $g$ over a number field $K$, with good reduction outside a finite set of primes $S$. Fixing one of these abelian varieties $A$, we prove that there are finitely many…

Number Theory · Mathematics 2025-10-17 Brian Lawrence , Will Sawin

We construct some examples of polynomial maps over finite fields that admit subvarieties with a peculiar property: every geometric point is mapped to a fixed point by some iteration of the map, while the whole subvariety is not. Several…

Number Theory · Mathematics 2015-05-14 Alexander Borisov

We consider the theory of algebraically closed fields of characteristic zero with multivalued operations $x\mapsto x^r$ (raising to powers). It is in fact the theory of equations in exponential sums. In an earlier paper we have described…

Logic · Mathematics 2015-01-15 Boris Zilber

In this paper we apply Ax-Schanuel's Theorem to the ultraproduct of $p$-adic fields in order to get some results towards algebraic independence of $p$-adic exponentials for almost all primes $p$.

Logic · Mathematics 2018-11-13 Ali Bleybel

We show that the image of the Abel-Jacobi map admits functorially a model over the field of definition, with the property that the Abel-Jacobi map is equivariant with respect to this model. The cohomology of this abelian variety over the…

Algebraic Geometry · Mathematics 2020-07-15 Jeff Achter , Sebastian Casalaina-Martin , Charles Vial

We present a conjectural formula describing the cokernel of the Albanese map of zero-cycles of smooth projective varieties $X$ over $p$-adic fields in terms of the N\'eron-Severi group and provide a proof under additional assumptions on an…

Number Theory · Mathematics 2019-02-20 Wataru Kai

We discuss the geometry and arithmetic of higher-dimensional analogues of Ch\^atelet surfaces; namely, we describe the structure of their Brauer and Picard groups and show that they can violate the Hasse principle. In addition, we use these…

Number Theory · Mathematics 2012-06-13 Anthony Várilly-Alvarado , Bianca Viray

We show that if X is a nonsingular projective variety of general type over an algebraically closed field k of positive characteristic and X has maximal Albanese dimension and the Albanese map is separable, then |4K_X| induces a birational…

Algebraic Geometry · Mathematics 2014-04-22 Yuchen Zhang

For an $n$-qubit system, a rational function on the space of mixed states which is invariant with respect to the action of the group of local symmetries may be viewed as a detailed measure of entanglement. We show that the field of all such…

Mathematical Physics · Physics 2024-03-13 Luca Candelori , Vladimir Y. Chernyak , John R. Klein

We prove the analogue of Schanuel's conjecture for raising to the power of an exponentially transcendental real number. All but countably many real numbers are exponentially transcendental. We also give a more general result for several…

Number Theory · Mathematics 2011-08-05 Martin Bays , Jonathan Kirby , A. J. Wilkie

We introduce the theory of unipotent morphisms of algebraic stacks and prove a surprising local to global principle for a class of vector bundles. Two sample applications of our methods are the following: (1) a unipotent analogue of…

Algebraic Geometry · Mathematics 2026-05-06 Daniel Bragg , Jack Hall , Siddharth Mathur

Let $a_X:X\rightarrow \mathrm{Alb}\, X$ be the Albanese map of a smooth complex projective variety. Roughly speaking in this note we prove that for all $i \geq 0$ and $\alpha\in \mathrm{Pic}^0\, X$, the cohomology ranks $h^i(\mathrm{Alb}\,…

Algebraic Geometry · Mathematics 2018-12-18 Federico Caucci , Giuseppe Pareschi