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mmm
  • Member for 14 years
  • Last seen more than 9 years ago
15 votes
3 answers
3k views

Are measurable homomorphisms $ (\Bbb{C},+) \to (\Bbb{C},+) $ or $ (\Bbb{C},+) \to (\Bbb{C},*) $ continuous, and do they admit an explicit description?

11 votes
7 answers
906 views

describe subsets of the integers closed under the binary operation Ax+By

9 votes
2 answers
1k views

Is model structure on CatSet unique?

9 votes
2 answers
863 views

Are there standard examples of stable theories that are undecidable?

8 votes
3 answers
1k views

Category and homotopy theoretic methods in set theory

7 votes
1 answer
900 views

complex algebraic morphisms as topological maps: every morphism is a topological fibration on a Zariski dense open subset?

6 votes
0 answers
771 views

field automorphism action on $Ext^1(\mathbb{C}^*,\mathbb{Z})$ or $Ext^1(\bar{\mathbb Q}^\star,\mathbb{Z})$

5 votes
1 answer
623 views

algebro-geometric properties of morphisms between algebraic groups

4 votes
0 answers
210 views

find whether a polynomial has a zero in a finitely generated subgroup of $C^*$

4 votes
1 answer
332 views

ultrafilter characterisation of huge cardinals

3 votes
0 answers
163 views

topology generated by irreducible componets of $\Gamma$-invariant closed sets

3 votes
1 answer
300 views

pi_1 of algebraic varieties and long exact sequence of a fibration

3 votes
2 answers
738 views

orbits of linear algebraic group $G({\Bbb Q}_p)$ acting on subgroups of ${\Bbb Q}_p^n$

2 votes
0 answers
386 views

relative cohomology $H(X,D)$ of a pair in Weil cohomology theory

2 votes
0 answers
404 views

a reference for Kummer theory, with proofs ?

2 votes
0 answers
130 views

non-degenarete tools to calculate a derived functor on a model category which is a poset?

2 votes
0 answers
156 views

"non-Bousfield" localisations of model categories

1 vote
0 answers
102 views

irreducible analytic decomposition of sets invariant under a group action

1 vote
0 answers
132 views

algebraic varieties whose fundamental group is subgroup separable wrt subvariety subgroups