64

Answers
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55
Awfully sophisticated proof for simple facts
33
Is it possible to partition $\mathbb R^3$ into unit circles?
23
Forcing as a tool to prove theorems
19
anti-measureable function
18
Partitioning $\mathbb{R}$ into $\aleph_1$ Borel sets
13
Why does $\aleph_{\omega}$ have more than $\aleph_{\omega}$ countable subsets?
11
Proof of the weak Goldbach Conjecture
11
Strengthening the Induction Hypothesis
11
Least collaborative mathematician
11
Is there a name for a family of finite sequences that block all infinite sequences?
10
Intuitive and/or philosophical explanation for set theory paradoxes
10
Why is this set stationary?
10
Interesting conjectures “discovered” by computers and proved by humans?
9
confusion about forcing
9
Major mathematical advances past age fifty
8
Reasons to believe Vopenka’s principle/huge cardinals are consistent
8
Examples of ZFC theorems proved via forcing
8
The history of Proper Forcing
8
Large cardinals
8
Sum of the reciprocal of perfect numbers (2)
7
TP($\omega_2$) and the continuum
7
Is there a universal countable group? (a countable group containing every countable group as a subgroup)
7
Adding a random real makes the set of ground model reals meager
7
Applications of infinite Ramsey’s Theorem (on N)?
6
Does there exist a comprehensive compilation of Erdos’s open problems?
6
Are there natural choices of $\sqrt{-1}$ in $\mathbb Z/p\mathbb Z$ for a prime $p\equiv 1\pmod 4$
6
More on Lebesgue non-measurability
6
Countable coloring of a plane
5
Examples of stationary set preserving forcings that are not semiproper?
5
How to partition R^3 into pairwise non-parallel lines?
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