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Boccherini
  • Member for 8 years, 11 months
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7 votes
1 answer
850 views

Galois action on prime ideals

6 votes
0 answers
142 views

Automorphisms of an algebraic closure of $\mathbb{Q}$ without the Axiom of Choice

5 votes
2 answers
107 views

Is $\mathbb{C}$ still algebraically closed in ZF-models without the Axiom of Choice?

4 votes
1 answer
1k views

"Reduction modulo $p$" of a scheme

4 votes
2 answers
736 views

Abstract properties of the absolute Galois group over $\mathbb{Q}$

4 votes
2 answers
879 views

Monster Model Theory

4 votes
1 answer
262 views

Automorphism group of $\mathbb{Q}/\mathbb{Z}$ [closed]

3 votes
0 answers
106 views

Isomorphisms between sub division rings of degree $2$

3 votes
1 answer
228 views

Isomorphic subsets of countable total orders

3 votes
1 answer
174 views

Some Galois theory

3 votes
2 answers
239 views

Dense linear orders embedded in the rationals

3 votes
2 answers
121 views

Uncountable homogeneous linear orders

2 votes
1 answer
129 views

Eigenvectors of Hermitian matrices over arbitrary fields

2 votes
1 answer
177 views

Kronecker product for matrices over noncommutative fields

2 votes
0 answers
42 views

Linear maps over division rings

2 votes
1 answer
101 views

Inverse limit of closed intervals which is open?

2 votes
0 answers
45 views

Homogeneous prime ideals over finite fields

2 votes
0 answers
413 views

Closed points and rational points

2 votes
1 answer
257 views

Vector spaces and field extensions, and the Axiom of Choice

2 votes
0 answers
41 views

General linear groups and the axiom of choice

2 votes
0 answers
58 views

Is $\mathbf{PGL}_2(k)$ a characteristic subgroup of $\mathbf{P\Gamma L}_2(k)$, $k$ a division ring?

2 votes
1 answer
111 views

Nonisomorphic Galois groups of isomorphic subfields

1 vote
1 answer
112 views

Projective lines over $\mathbb{Q}$ and $\mathbb{Z}$

1 vote
0 answers
58 views

Definition of Grothendieck ring of varieties

1 vote
1 answer
55 views

Generators of $\mathbb{Z}[X_1,\ldots,X_m]$

1 vote
0 answers
732 views

Geometric and arithmetic Frobenius

1 vote
0 answers
114 views

Pontrjagin duality of finite nonabelian groups

1 vote
1 answer
192 views

Action of torus on itself

1 vote
1 answer
89 views

A beginner's question on rational points

1 vote
2 answers
181 views

Base change of a $\mathbb{Z}$-scheme to $\mathrm{Spec}(k)$, $k$ a field