14

Questions
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How to prove a $\Pi_2$ statement properly?

oct 30 at 11:41 Alex Gavrilov 668●2●8

 
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173
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Usual vs. cohomological Brauer groups of Calabi-Yau threefolds

oct 5 at 15:29 Angelo 19.8k●3●47●75

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What software one needs to solve a big linear system on a small computer?

oct 19 at 14:09 Igor Rivin 31.2k●3●37●71

 
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Does the absolute Galois group act transitively on the trees with 3 terminal vertices?

jul 3 at 9:22 MathOverflow♦ 1●2●3

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