Functorial Desingularization of Quasi-excellent Schemes in Characteristic Zero: the Non-embedded Case

نویسنده

  • MICHAEL TEMKIN
چکیده

We prove that any noetherian quasi-excellent scheme of characteristic zero admits a strong desingularization which is functorial with respect to all regular morphisms. We show that as an easy formal consequence of this result one obtains strong functorial desingularization for many other spaces of characteristic zero including quasi-excellent stacks and formal schemes, and complex and non-archimedean analytic spaces. Moreover, these functors easily generalize to non-compact setting by use of converging blow up hypersequences with regular centers.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Desingularization of Quasi-excellent Schemes in Characteristic Zero

For a Noetherian scheme X, let Xreg denote the regular locus of X. The scheme X is said to admit a resolution of singularities if there exists a blowup X ′ → X with center disjoint from Xreg and regular X ′. More generally, for a closed subscheme Z ⊂ X, let (X,Z)reg denote the set of points x ∈ Xreg such that, in an open neighborhood of x, Z is defined by an equation of the form t1 1 · · · · · ...

متن کامل

ar X iv : 0 90 5 . 35 80 v 1 [ m at h . A G ] 2 1 M ay 2 00 9 Q - UNIVERSAL DESINGULARIZATION

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 morphism with connected affine source can be factored into a smooth morphism, a ground-field extension and a generic-fibre embedding. Every variety of characteri...

متن کامل

Lefschetz Extensions, Tight Closure, and Big Cohen-macaulay Algebras

We associate to every equicharacteristic zero Noetherian local ring R a faithfully flat ring extension which is an ultraproduct of rings of various prime characteristics, in a weakly functorial way. Since such ultraproducts carry naturally a non-standard Frobenius, we can define a new tight closure operation on R by mimicking the positive characteristic functional definition of tight closure. T...

متن کامل

On Macaulayfication of Certain Quasi-projective Schemes

The Macaulayfication of a Noetherian scheme X is a birational proper morphism Y → X such that Y is a CohenMacaulay scheme. Of course, a desingularization is a Macaulayfication and Hironaka gave a desingularization of arbitrary algebraic variety over a field of characteristic 0. In 1978 Faltings gave a Macaulayfication of a quasi-projective scheme whose nonCohen-Macaulay locus is of dimension 0 ...

متن کامل

Good formal structures for flat meromorphic connections, III: Towards functorial modifications

Given a formal flat meromorphic connection over an excellent scheme over a field of characteristic zero, we proved existence of good formal structures and a good DeligneMalgrange lattice after suitably blowing up. For the corresponding situation over a complex analytic space, one immediately obtains the existence of suitable blowups locally, but it is not clear that these blowups can be glued t...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2009