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Questions
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Are there refuted analogues of the Riemann hypothesis?

apr 14 at 17:28 Frank Thorne 3,833●1●19●50

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Authorship of Grothendieck universes

dec 29 at 14:32 Colin McLarty 1,879●2●14

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How to measure the strength of Zermelo over bounded Zermelo?

dec 28 at 18:50 Colin McLarty 1,879●2●14

 
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Does any lower bound on proofs of FLT improve Shepherdson 1965?

apr 16 at 15:37 Ryan Reich 3,941●1●9●25

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How many well orderings of $\aleph_0$ are there?

jan 20 at 7:06 Freddy Bustos 1

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What is the status of Cantor-Schroder-Bernstein in Reverse Math?

dec 19 at 20:26 François G. Dorais♦ 22.4k●2●48●113

 
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Can second order arithmetic make $\aleph_1^L$ countable?

nov 5 at 2:40 Colin McLarty 1,879●2●14

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Extremals versus minima for variational problems

apr 11 12 at 13:37 Robert Bryant 21.8k●3●75●97

 
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Does ZF bound countable unions of countable sets?

oct 15 at 9:21 Asaf Karagila 7,198●1●14●44

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Generalizing Feferman - Levy

oct 15 at 19:10 Andres Caicedo 14.4k●1●42●79

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