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Pedro Sánchez Terraf's user avatar
Pedro Sánchez Terraf's user avatar
Pedro Sánchez Terraf's user avatar
Pedro Sánchez Terraf
  • Member for 9 years, 2 months
  • Last seen more than a week ago
37 votes
Accepted

What is a Dynkin system? ($\lambda$-system)

15 votes

Proving the existence of a proof without actually giving a proof

8 votes

Classification of Finite Topologies

8 votes
Accepted

Is groups with binary operation alone a variety?

8 votes

An example of set which is not Souslin set

6 votes
Accepted

Problem about $F_\sigma$ and $G_\delta$ sets

6 votes

Conditions for a intersection of connected sets to be connected.

5 votes

Algebras with a self-dual congruence lattice

5 votes
Accepted

Linking the Analysis of the Baire space, Cantor space and $\mathbb{R}$.

5 votes

Large connected $T_2$-spaces

5 votes

What are permutable equivalence relations intuitively?

5 votes

$(\omega +3)\cdot\omega=\omega\cdot\omega$

5 votes

General formula - % of %

4 votes

In what sense of "structure" do group homomorphisms "preserve structure"?

4 votes
Accepted

A conceptual link between trees and Polish spaces

4 votes
Accepted

why only closed operations

4 votes
Accepted

Prime ideal theorem for modular lattices?

4 votes
Accepted

Diagonal union of non-stationary sets

4 votes
Accepted

When Borel functions and Baire functions are equal?

4 votes
Accepted

Verification : Prove every variety is generated by the class of subdirectly irreducible algebras in the class.

4 votes

What is the name of this topology on the set of branches in a tree?

4 votes
Accepted

Are there other important measure spaces which are not obtained directly from an outer measure or from the Caratheodory extension theorem?

3 votes
Accepted

Is a countable infinite union of $\Sigma_1$ sets is $\Sigma_1$?

3 votes
Accepted

Well-founded trees of any order

3 votes

Are Borel subsets of Polish spaces Polish?

3 votes
Accepted

Is this space subspace of $[0,1]^{\mathbb{N}}$ Polish?

3 votes

Presentation on game theory and determinacy

3 votes
Accepted

Is the projection of a Jordan measurable set Jordan measurable?

3 votes
Accepted

Complexity of formulae involving projective sets in Polish spaces

3 votes
Accepted

If $A$ is $\kappa\text{-Suslin}$ then so is $pA$.

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