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Questions
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Non-crystallographic cluster algebras

1d ago Philipp Lampe 861●7●17

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7
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Does Cantor-Bernstein hold for classes?

nov 24 10 at 21:27 Ricky Demer 6,401●8●31

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An “existence contra partition of unity” statement for integer matrices?

dec 11 09 at 19:21 Philipp Lampe 861●7●17

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9
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Can a non-surjective polynomial map from an infinite field to itself miss only finitely many points?

dec 1 09 at 5:35 Greg Kuperberg 36.2k●2●116●179

 
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5
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747
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Pairs of shortest paths

oct 23 09 at 17:42 Ricky Liu 370●3●5

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Determinant of a pullback diagram

oct 22 09 at 16:44 Reid Barton 14.4k●1●28●85

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2
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726
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What is the size of the category of finite dimensional F_q vector spaces?

oct 21 09 at 8:15 Philipp Lampe 861●7●17