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set-theory

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Questions

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11

When are two forcing posets "the same"?

Jul 26, 2023

11

Undefinable inner model

Feb 12

9

Naive way to violate $\mathsf{SCH}$ at $\aleph_\omega$

Mar 2

7

Did Lebesgue like non-measurable set or not?

Sep 12

7

Strength of Borel determinacy

Sep 23, 2023

Answers

6

How much of the axiom of choice do you need in mathematics?

Aug 11, 2023

6

Who needs Replacement anyway?

Sep 12

4

Maximal contractible-ish Hausdorff surfaces

Jul 9, 2023

3

A better way to explain forcing?

Jul 7, 2023

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set-theory

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foundations

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lo.logic

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axiom-of-choice

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elementary-theory-category-of-sets

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When are two forcing posets "the same"?

+60

Who needs Replacement anyway?

+78

Did Lebesgue like non-measurable set or not?

+10

Naive way to violate $\mathsf{SCH}$ at $\aleph_\omega$

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