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# Questions

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2
274
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### Converse to Milnor’s theorem on manifolds with nonnegative Ricci curvature.

may 9 at 0:23 Lee Mosher 5,8061926

3
1
92
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### Reduction of antisymmetric complex matrices

apr 30 at 13:45 Jim Humphreys 26k3782

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5
1
140
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### Fixing a proof of the systolic inequality for higher genus surfaces

apr 9 at 11:00 katz 1,264112

5
13
1
273
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### Algebraic characterization of the curvature operator of symmetric spaces

jan 26 at 14:10 Robert Bryant 21.8k37597

3
4
0
125
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### How to generate a random (Weyl) curvature operator ?

jan 21 at 4:37 Thomas Richard 1,4521411

1
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1
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 19.7k12469

3
10
3
423
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### Manifold whose universal covering is a sphere but which is not a space form?

sep 18 at 21:05 Agol 23.9k13384

1
2
0
119
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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 1,4521411

1
9
0
238
views

### Is it overkill to invoke Kirszbraun theorem to prove the following fact ?

feb 29 12 at 13:25 Thomas Richard 1,4521411

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