User Zetapology

10 votes

1 answer

1k views

Is it known whether or not $\aleph_\alpha=\beth_\alpha$ can be proven by ZFC?

asked Oct 4, 2017 at 4:51

8 votes

1 answer

662 views

Abandoned LCAs on Cantor's Attic : Grand Reflection cardinals, universe cardinals, weak universe cardinals

asked Dec 15, 2017 at 21:19

6 votes

3 answers

1k views

Do these ordinals exist?

asked Sep 18, 2017 at 7:24

5 votes

1 answer

250 views

Generalizing The Cardinal Characteristics of the Continuum

asked Oct 3, 2017 at 14:30

5 votes

2 answers

3k views

Are there functions which are neither convex nor concave everywhere but are continuous? [closed]

asked Oct 5, 2017 at 3:14

4 votes

2 answers

607 views

Superextendibles defined analogously to superstrong cardinals: Where are they consistency strength-wise?

asked Oct 21, 2017 at 23:43

3 votes

1 answer

299 views

The Strong Compactness Cardinal of $n$-th Order Logic

asked Nov 11, 2017 at 2:29

3 votes

0 answers

415 views

Consistency of Nontrivial Elementary Embedding from $\omega_1$ to itself?

asked Aug 28, 2018 at 16:31

1 vote

1 answer

295 views

A Weak form of Extendibility and Inner Model Theory

asked Dec 2, 2017 at 4:23

1 vote

1 answer

214 views

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

asked Oct 10, 2017 at 3:37

0 votes

1 answer

490 views

The smallest initial ordinal which is not defined using first-order formulas with parameters of smaller ordinals?

asked Oct 11, 2017 at 4:32

-1 votes

1 answer

235 views

What is known about $\Pi_1^0$-Indescribable cardinals?

asked Oct 20, 2017 at 0:05

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12 Questions

Is it known whether or not $\aleph_\alpha=\beth_\alpha$ can be proven by ZFC?

Abandoned LCAs on Cantor's Attic : Grand Reflection cardinals, universe cardinals, weak universe cardinals

Do these ordinals exist?

Generalizing The Cardinal Characteristics of the Continuum

Are there functions which are neither convex nor concave everywhere but are continuous? [closed]

Superextendibles defined analogously to superstrong cardinals: Where are they consistency strength-wise?

The Strong Compactness Cardinal of $n$-th Order Logic

Consistency of Nontrivial Elementary Embedding from $\omega_1$ to itself?

A Weak form of Extendibility and Inner Model Theory

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

The smallest initial ordinal which is not defined using first-order formulas with parameters of smaller ordinals?

What is known about $\Pi_1^0$-Indescribable cardinals?