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Goldstern
  • Member for 12 years, 10 months
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11 votes
Accepted

Well-ordering with a topological property

11 votes

Is there a theorem whose only known proof uses "$A$ or not $A$" for undecidable $A$

11 votes
Accepted

Homeomorphisms vs Borel automorphisms

10 votes
Accepted

Cardinality of connected Hausdorff topologies

10 votes

When was the continuum hypothesis born?

10 votes

Existence of unknowable algorithms ?

10 votes

Independent families of subsets of $\mathbb N$ of size continuum

10 votes
Accepted

Using this definition of "closeness", how close is $L$ to $V$?

10 votes

What are examples of books which teach the practice of mathematics?

10 votes

ZFC applications of Shelah's creature forcing

9 votes
Accepted

Effect of adding one Hechler real versus adding two on the meager ideal

9 votes
Accepted

Does Laver Forcing add an infinitely often equal real?

9 votes

Countably infinite posets isomorphic to its intervals

9 votes
Accepted

A simple cardinal characteristic associated with $\omega^\omega$

9 votes

Is the union of a chain of elementary embeddings elementary?

9 votes
Accepted

Solovay’s model

9 votes
Accepted

Shelah's "Can you take Solovay's inaccessible away?"

9 votes

Is every p-point ultrafilter Ramsey?

9 votes
Accepted

Cardinality of cofinal set of normal functions $f \colon \omega_1 \to \omega_1$

9 votes
Accepted

Extracting countable chains from linear orders

9 votes
Accepted

A question about the Axiom of Choice and straight lines in the Euclidean plane.

9 votes

What notion captures the 'class' of all classes?

9 votes
Accepted

Why does the Solovay-Tennenbaum theorem work?

9 votes
Accepted

Cardinality of a certain set of distinct subsets of $\mathbb{N}$

9 votes

About the axiom of choice, the fundamental theorem of algebra, and real numbers

9 votes
Accepted

Polish by compact is Polish?

8 votes
Accepted

Expressive power of $\omega$-order logic

8 votes
Accepted

Maximal chains in a quasi-order of linear order types

8 votes

special extremally disconnected spaces with only finite isolated points

8 votes

Is there constructive proof of the fact that every recursive set $A \ne \varnothing$ is recursively enumerable in non-decreasing order?

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