Toric geometry and the Semple–Nash modification

PD González Pérez, B Teissier - Revista de la Real Academia de …, 2014 - Springer
This paper proposes some material towards a theory of general toric varieties without the
assumption of normality. Their combinatorial description involves a fan to which is attached …

Nash blowups of 2-generic determinantal varieties in positive characteristic

TM Dalbelo, D Duarte, MAS Ruas - arXiv preprint arXiv:2409.04688, 2024 - arxiv.org
We show that the Nash blowup of 2-generic determinantal varieties over fields of positive
characteristic is non-singular. We prove this in two steps. Firstly, we explicitly describe the …

Resolution of singularities: an introduction

M Spivakovsky - Handbook of Geometry and Topology of Singularities I, 2020 - Springer
The problem of resolution of singularities and its solution in various contexts can be traced
back to I. Newton and B. Riemann. This paper is an attempt to give a survey of the subject …

Log differentiable spaces and manifolds with corners

WD Gillam, S Molcho - arXiv preprint arXiv:1507.06752, 2015 - arxiv.org
We develop a general theory of log spaces, in which one can make sense of the basic
notions of logarithmic geometry, in the sense of Fontaine-Illusie-Kato. Many of our general …

Nash blowups of toric varieties in prime characteristic

D Duarte, J Jeffries, L Núñez-Betancourt - Collectanea Mathematica, 2024 - Springer
We initiate the study of the resolution of singularities properties of Nash blowups over fields
of prime characteristic. We prove that the iteration of normalized Nash blowups …

Nash modification on toric surfaces

D Duarte - Revista de la Real Academia de Ciencias Exactas …, 2014 - Springer
It has been recently shown that the iteration of Nash modification on not necessarily normal
toric varieties corresponds to a purely combinatorial algorithm on the generators of the …

F-blowups and essential divisors for toric varieties

E Chávez-Martínez, D Duarte, T Yasuda - arXiv preprint arXiv:2304.13247, 2023 - arxiv.org
We investigate the relation between essential divisors and F-blowups, in particular, address
the problem whether all essential divisors appear on the $ e $-th F-blowup for large enough …

Nash blowups in prime characteristic

D Duarte, L Núñez-Betancourt - Revista Matemática Iberoamericana, 2021 - ems.press
We initiate the study of Nash blowups in prime characteristic. First, we show that a normal
variety is non-singular if and only if its Nash blowup is an isomorphism, extending a theorem …

A higher-order tangent map and a conjecture on the higher Nash blowup of curves

E Chávez-Martínez, D Duarte, A Giles Flores - Mathematische Zeitschrift, 2021 - Springer
We introduce a higher-order version of the tangent map of a morphism and find a matrix
representation. We then apply this matrix to solve a conjecture by Yasuda regarding the …

Factorization of the normalization of the Nash blowup of order n of An by the minimal resolution

E Chávez-Martínez - Rev. Mat. Iberoam.(online first), DOI, 2023 - ems.press
Factorization of the normalization of the Nash blowup of order n of A n by the minimal resolution
Page 1 Rev. Mat. Iberoam. (Online first) DOI 10.4171/RMI/1421 © 2023 Real Sociedad …