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The objective of this paper is to discuss invariants of singularities of algebraic schemes over fields of positive characteristic, and to show how they yield the simplification of singularities. We focus here on invariants which arise in an…

Algebraic Geometry · Mathematics 2011-03-18 Angélica Benito , Orlando E. Villamayor

Let $X$ be a closed subscheme embedded in a scheme $W$ smooth over a field ${\bf k}$ of characteristic zero, and let ${\mathcal I}(X)$ be the sheaf of ideals defining $X$. Assume that the set of regular points of $X$ is dense in $X$. We…

Algebraic Geometry · Mathematics 2007-05-23 Ana Bravo , Orlando Villamayor

This article contains an elementary constructive proof of resolution of singularities in characteristic zero. Our proof applies in particular to schemes of finite type and to analytic spaces (so we recover the great theorems of Hironaka).…

alg-geom · Mathematics 2008-02-03 Edward Bierstone , Pierre Milman

Conventional ways to solve optimization problems on low-rank matrix sets which appear in great number of applications ignore its underlying structure of an algebraic variety and existence of singular points. This leads to appearance of…

Numerical Analysis · Mathematics 2017-10-04 Valentin Khrulkov , Ivan Oseledets

In this paper we propose the concept of formal desingularizations as a substitute for the resolution of algebraic varieties. Though a usual resolution of algebraic varieties provides more information on the structure of singularities there…

Algebraic Geometry · Mathematics 2008-01-16 T. Beck

After briefly recalling some computational aspects of blowing up and of representation of resolution data common to a wide range of desingularization algorithms (in the general case as well as in special cases like surfaces or binomial…

Algebraic Geometry · Mathematics 2013-01-17 Anne Frühbis-Krüger

We give a combinatorial algorithm for equivariant embedded resolution of singularities of a toric variety defined over a perfect field. The algorithm is realized by a finite succession of blowings-up with smooth invariant centres that…

Algebraic Geometry · Mathematics 2007-05-23 Edward Bierstone , Pierre D. Milman

In the paper "Uniformity of Mordell-Lang" by Vesselin Dimitrov, Philipp Habegger and Ziyang Gao (arXiv:2001.10276), they use Silverman-Tate's Height Inequality and they give a proof of the same which makes use of Cartier divisors and hence…

Number Theory · Mathematics 2024-04-04 Debam Biswas , Zhelun Chen

We unify and generalize formulas obtained by Campillo, Delgado and Gusein-Zade in their series of articles. Positive results are established for rational and minimally elliptic singularities. By examples and counterexamples we also try to…

Algebraic Geometry · Mathematics 2007-10-05 András Némethi

We prove that the algorithm for desingularization of algebraic varieties in characteristic zero of the first two authors is functorial with respect to regular morphisms. For this purpose, we show that, in characteristic zero, a regular…

Algebraic Geometry · Mathematics 2009-05-25 Edward Bierstone , Pierre D. Milman , Michael Temkin

In this paper we simplify and otherwise improve the local resolution of singularities algorithm of [G1]-[G3], providing a local resolution of singularities method that works for functions with convergent power series over an arbitrary local…

Classical Analysis and ODEs · Mathematics 2015-03-25 Michael Greenblatt

It is shown that, for any reduced algebraic variety in characteristic zero, one can resolve all but simple normal crossings (snc) singularities by a finite sequence of blowings-up with smooth centres which, at every step, avoids points…

Algebraic Geometry · Mathematics 2012-06-26 Edward Bierstone , Sergio Da Silva , Pierre D. Milman , Franklin Vera Pacheco

We present an application of elimination theory to the study of singularities over arbitrary fields, particularly to the open problem of resolution. A partial extension of a function, defining resolution of singularities over fields of…

Algebraic Geometry · Mathematics 2007-12-24 Orlando Villamayor

We compare some algebras appeared in the recent attempts to prove resolution of singularities in positive characteristic. We also construct an algebra which encodes the same information and it is equivalent, up to integral closure, to the…

Algebraic Geometry · Mathematics 2012-08-10 Rocío Blanco , Santiago Encinas

This paper is devoted to give all the technical constructions and definitions that will lead to the construction of an algorithm of resolution of singularities for binomial ideals. We construct a resolution function that will provide a…

Algebraic Geometry · Mathematics 2010-09-06 Rocio Blanco

The main purpose of this article is to lay the foundations for a classification of isolated hypersurface singularities in positive characteristic. Although our article is in the spirit of Arnol'd who classified real an complex hypersurfaces…

Algebraic Geometry · Mathematics 2010-11-18 Yousra Boubakri , Gert-Martin Greuel , Thomas Markwig

Embedded principalization of ideals in smooth schemes, also known as Log-resolutions of ideals, play a central role in algebraic geometry. If two sheaves of ideals, say $I_1$ and $I_2$, over a smooth scheme $V$ have the same integral…

Algebraic Geometry · Mathematics 2008-02-28 Santiago Encinas , Orlando Villamayor

In this short note, we give a localized version of the basic triangle theorem, first published in 2011 (see [4]) in order to prove the independence of hyperlogarithms over various function fields. This version provides direct access to…

Symbolic Computation · Computer Science 2020-08-07 Gérard Duchamp , Nihar Gargava , Hoang Ngoc Minh , Pierre Simonnet

A simple new proof of the Harish-Chandra condition, preceded by an expository part on Hermitian symmetric spaces, holomorphic induction, and on some analytic tools.

Representation Theory · Mathematics 2023-12-29 Adam Koranyi

We discuss Hironaka's theorem on resolution of singularities in charactetistic 0 as well as more recent progress, both on simplifying and improving Hironaka's method of proof and on new results and directions on families of varieties,…

Algebraic Geometry · Mathematics 2017-11-29 Dan Abramovich