Laurent Moret-Bailly's user avatar
Laurent Moret-Bailly's user avatar
Laurent Moret-Bailly's user avatar
Laurent Moret-Bailly
  • Member for 13 years, 8 months
  • Last seen this week
  • Rennes, France
7 votes
Accepted

Is the set of hyperelliptic curves with a K-point closed?

7 votes
Accepted

Real points of reductive groups and connected components

7 votes

Every radical ideal in the ring of algebraic integers a finite intersection of prime ideals

6 votes

Are morphisms from affine schemes to Artin stacks affine morphisms?

6 votes
Accepted

Surjective étale morphisms étale locally split

6 votes

Group isomorphism $R^{\times} \simeq C_n\times C_2$?

6 votes

Absolute integral closure of local UFD

6 votes
Accepted

Constructibility of the locus of points where the fiber is an isomorphism modulo nilpotents

6 votes
Accepted

Contraction of some surfaces over a ring of algebraic integers

6 votes
Accepted

Derivation of formal power series

6 votes

'Cohomologically approximating' a $\mathbb{Q}[[t]]$-scheme by a one over the henselization of $\mathbb{Q}[t]$?

6 votes
Accepted

When is the gluing of two finite type affine Z-schemes affine?

6 votes
Accepted

Open idempotents in modules over a local ring

6 votes
Accepted

Artin approximation theorems over non-regular rings/non-Noetherian rings

6 votes
Accepted

Relative identity component for group algebraic spaces

6 votes
Accepted

Smoothness and smoothness over formal neighborhood

6 votes

Fibrations of projective varieties

6 votes
Accepted

Jacobians of genus 2 curves isogenous to a square of a supersingular elliptic curve over $\mathbb{F}_{p^2}$

6 votes
Accepted

Properties of colon ideal

6 votes
Accepted

Is the union of Cartan subgroups over $k$ dense?

6 votes
Accepted

Gluing along closed subschemes

6 votes
Accepted

finite non-commutative local group schemes

5 votes
Accepted

Etale group schemes over a local ring

5 votes

Does a closed immersion of an affine scheme in a smooth scheme factor over an open affine subscheme?

5 votes

Recover a morphism from its pullback

5 votes

Criteria for a map of schemes to be an isomorphism

5 votes

Why are polynomials easier to handle with than integers?

5 votes

Does a degeneration always have a larger-dimensional automorphism group?

5 votes

Implicit Function Theorem on Singular Varieties

5 votes

Adeles and twisted adeles

1 2 3
4
5
7