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We define vector fields, leaves and trajectories for schemes. With these tools, we are able to give a geometrical interpretation and to generalize several results of differential Galois theory and constructions on differential schemes. We…

Algebraic Geometry · Mathematics 2020-09-08 Colas Bardavid

We classify Artin-Schreier extensions of valued fields with non-trivial defect according to whether they are connected with purely inseparable extensions with non-trivial defect, or not. We use this classification to show that in positive…

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

This paper finds a classification, up-to an isomorphism, of abelian torsion groups realizable as Brauer groups of major types of Henselian valued primarily quasilocal fields with totally indivisible value groups. When $E$ is a quasilocal…

Rings and Algebras · Mathematics 2011-05-06 Ivan Chipchakov

We derive methods to compute higher order differentials (Hessians and Hessian-vector products) of the rendering operator. Our approach is based on importance sampling of a convolution that represents the differentials of rendering…

Graphics · Computer Science 2025-08-07 Zican Wang , Michael Fischer , Tobias Ritschel

We continue the study of $n$-dependent groups, fields and related structures, largely motivated by the conjecture that every $n$-dependent field is dependent. We provide evidence towards this conjecture by showing that every infinite…

Logic · Mathematics 2021-07-01 Artem Chernikov , Nadja Hempel

We develop a theory of Hrushovski-Kazhdan style motivic integration for certain type of non-archimedean o-minimal fields, namely polynomial-bounded T-convex valued fields. The structure of valued fields is expressed through a two-sorted…

Logic · Mathematics 2013-07-02 Yimu Yin

In this paper, we give a geometrization and a generalization of a lemma of differential Galois theory. This geometrization, in addition of giving a nice insight on this result, offers us the occasion to investigate several points of…

Algebraic Geometry · Mathematics 2010-12-03 Colas Bardavid

We answer two open questions about the model theory of valued differential fields introduced by Scanlon. We show that they eliminate imaginaries in the geometric language introduced by Haskell, Hrushovski and Macpherson and that they have…

Logic · Mathematics 2016-12-08 Silvain Rideau

Refining a constructive combinatorial method due to MacLane and Schilling, we give several criteria for a valued field that guarantee that all of its maximal immediate extensions have infinite transcendence degree. If the value group of the…

Commutative Algebra · Mathematics 2013-04-05 Anna Blaszczok , Franz-Viktor Kuhlmann

Over a global field any finite number of central simple algebras of exponent dividing $m$ is split by a common cyclic field extension of degree $m$. We show that the same property holds for function fields of two-dimensional excellent…

K-Theory and Homology · Mathematics 2021-04-06 Karim Johannes Becher , Parul Gupta

We define a class of quadratic differential algebras which are generated as differential graded algebras by the elements of an Euclidean space. Such a differential algebra is a differential calculus over the quadratic algebra of its…

Quantum Algebra · Mathematics 2019-03-20 Michel Dubois-Violette , Giovanni Landi

We show that separably closed valued fields of finite imperfection degree (either with lambda-functions or commuting Hasse derivations) eliminate imaginaries in the geometric language. We then use this classification of interpretable sets…

Logic · Mathematics 2018-02-14 Martin Hils , Moshe Kamensky , Silvain Rideau

We present a new construction of gradient-like vector fields in the setting of Morse theory on a complex analytic stratification. We prove that the ascending and descending sets for these vector fields possess cell decompositions satisfying…

Algebraic Geometry · Mathematics 2010-05-26 Mikhail Grinberg

Series expansions of isotropic Gaussian random fields on $\mathbb{S}^2$ with independent Gaussian coefficients and localized basis functions are constructed. Such representations with multilevel localised structure provide an alternative to…

Probability · Mathematics 2022-06-27 Markus Bachmayr , Ana Djurdjevac

We prove analogs of the Bezout and the Bernstein-Kushnirenko-Khovanskii theorems for systems of algebraic differential conditions over differentially closed fields. Namely, given a system of algebraic conditions on the first $l$ derivatives…

Algebraic Geometry · Mathematics 2019-02-20 Gal Binyamini

We investigate the existence of "generic derivations" in exponential fields. We show that exponential fields without additional compatibility conditions between derivation and exponentiation cannot support a generic derivation.

Logic · Mathematics 2024-07-23 Fornasiero Antongiulio , Giuseppina Terzo

We generate random functions locally via a novel generalization of Dyson Brownian motion, such that the functions are in a desired differentiability class, while ensuring that the Hessian is a member of the Gaussian orthogonal ensemble…

High Energy Physics - Theory · Physics 2015-03-11 Thorsten Battefeld , Chirag Modi

We introduce a new class of higgs type complex-valued scalar fields $U$ with Feynman propagator $\sim 1/p^4$ and consider the matching to the traditional fields with propagator $\sim 1/p^2$ in the viewpoint of effective potentials at tree…

General Physics · Physics 2020-08-04 Rui-Cheng Li

In this paper we illustrate certain criteria which are sufficient for a henselian valued field to admit non-isomorphic maximal purely wild extensions.

Commutative Algebra · Mathematics 2020-11-19 Arpan Dutta

We study subfields of large fields which are generated by infinite existentially definable subsets. We say that such subfields are existentially generated. Let $L$ be a large field of characteristic exponent $p$, and let $E\subseteq L$ be…

Logic · Mathematics 2017-10-11 Sylvy Anscombe