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# Questions

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### How much of ZFC does Quine’s New Foundations prove?

may 3 at 17:33 Thomas Forster 45123

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### Does the fact that this vector space is not isomorphic to its double-dual require choice?

apr 5 12 at 9:56 Asaf Karagila 7,24311444

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### Generalizations of pcf theory

oct 13 11 at 21:55 Amit Kumar Gupta 2,9091026

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### Bounds on $\max \mathrm{pcf}(A)$ if $\Pi A$ is big

oct 11 11 at 17:59 François G. Dorais 22.7k248113

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### PFA and the compactness/incompactness of $\omega_2$

sep 7 11 at 0:21 Amit Kumar Gupta 2,9091026

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### Why is this theorem (about $L(P(\omega_1))^V$ and $L(P(\omega_1))^{V[G]}$) nice?

jul 22 11 at 4:38 François G. Dorais 22.7k248113

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### Reference letters for teaching positions

jul 12 11 at 0:42 Andrew 95116

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### Is every p-point ultrafilter Ramsey?

may 6 11 at 17:27 Goldstern 5,26011227

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388
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### Is the set of cube-free binary sequences perfect?

apr 19 11 at 15:02 Amit Kumar Gupta 2,9091026

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