11

Questions
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Are nontrivial integer solutions known for $x^3+y^3+z^3=3$?

jun 2 11 at 18:48 Noam D. Elkies 19.6k●4●65●98

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12
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Is #k-XORSAT #P-complete?

apr 5 11 at 10:44 András Salamon 1,214●5●13

 
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212
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In Szemerédi’s Regularity Lemma, how many blocks are in the partition?

apr 17 at 11:03 András Salamon 1,214●5●13

 
7
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1
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246
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Weakest choice principle required for Robertson-Seymour Graph Minor Theorem?

apr 30 at 12:04 Emil Jeřábek 10.8k●1●27●42

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258
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Name for this generalized pigeonhole principle?

nov 26 at 0:10 François G. Dorais♦ 23.1k●2●52●116

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Do right-profiles determine graphs up to isomorphism?

jun 5 at 1:34 Chris Godsil 5,901●1●8●24

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319
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Higher-order preservation theorems?

jun 16 11 at 18:25 Ali Enayat 4,459●1●9●23

 
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3
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310
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Survey of finite axiomatizability for relational theories?

oct 25 at 15:44 Dima Sustretov 1,339●4●12

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1
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194
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Simple lower bounds for Bell numbers (number of set partitions)?

dec 28 at 14:22 MathOverflow♦ 1●2●3

 
2
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1
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A Ramsey-like lower bound?

jul 10 at 21:06 James Cranch 1,186●3●14

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