15

Questions
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8
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2
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278
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Converse to Milnor’s theorem on manifolds with nonnegative Ricci curvature.

may 9 at 0:23 Lee Mosher 5,866●1●9●26

 
3
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1
answer
92
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Reduction of antisymmetric complex matrices

apr 30 at 13:45 Jim Humphreys 26.1k●38●84

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5
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1
answer
143
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Fixing a proof of the systolic inequality for higher genus surfaces

apr 9 at 11:00 katz 1,264●1●12

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13
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1
answer
274
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Algebraic characterization of the curvature operator of symmetric spaces

jan 26 at 14:10 Robert Bryant 21.8k●3●75●97

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4
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0
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125
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How to generate a random (Weyl) curvature operator ?

jan 21 at 4:37 Thomas Richard 1,452●1●4●11

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3
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1
answer
61
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Dependence of the blow-up time of existence of an ODE with respect to initial condition.

nov 28 at 10:43 Pietro Majer 19.7k●1●24●69

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10
votes
3
answers
426
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Manifold whose universal covering is a sphere but which is not a space form?

sep 18 at 21:05 Agol 23.9k●1●33●85

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2
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0
answers
120
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How do you call a map which sends convergent sequences to pre-compact ones ?

may 10 12 at 8:53 Thomas Richard 1,452●1●4●11

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9
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0
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238
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Is it overkill to invoke Kirszbraun theorem to prove the following fact ?

feb 29 12 at 13:25 Thomas Richard 1,452●1●4●11

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7
votes
1
answer
399
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Smoothability of compact Alexandrov surfaces with curvature bounded from below.

jan 29 12 at 3:16 Vitali Kapovitch 4,082●1●11●22

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