Thomas Richard's user avatar
Thomas Richard's user avatar
Thomas Richard's user avatar
Thomas Richard
  • Member for 13 years, 7 months
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14 votes
1 answer
722 views

Algebraic characterization of the curvature operator of symmetric spaces

13 votes
3 answers
1k views

Manifold whose universal covering is a sphere but which is not a space form?

11 votes
1 answer
1k views

Geometry of Whitehead manifolds.

11 votes
1 answer
522 views

Minimum requirements for a Kähler manifold to be hyperkähler

10 votes
1 answer
905 views

Metrically singular Alexandrov space.

10 votes
0 answers
378 views

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

10 votes
1 answer
880 views

Bochner's formula on surfaces using moving coframes

9 votes
1 answer
792 views

A clarification on pointed Gromov-Hausdorff convergence

9 votes
1 answer
879 views

Smoothability of compact Alexandrov surfaces with curvature bounded from below

9 votes
3 answers
3k views

Complexity of matching red and blue points in the plane.

8 votes
2 answers
615 views

Converse to Milnor's theorem on manifolds with nonnegative Ricci curvature

7 votes
0 answers
433 views

Regularity of solutions to a linear degenerate parabolic pde

7 votes
1 answer
557 views

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

6 votes
0 answers
343 views

How to generate a random (Weyl) curvature operator ?

5 votes
1 answer
310 views

Fixing a proof of the systolic inequality for higher genus surfaces

5 votes
1 answer
293 views

Can an open manifold with positive Ricci curvature be non simply connected at infinity?

4 votes
0 answers
286 views

Was this particular case of the tube formula known before Weyl and Hotelling?

4 votes
1 answer
793 views

Applying Cheeger and Colding segment inequality

3 votes
0 answers
285 views

Distance to the level sets of an almost linear function

3 votes
1 answer
288 views

Can one smooth open star shaped domains from the inside by star shaped domains?

3 votes
1 answer
262 views

Reduction of antisymmetric complex matrices

2 votes
1 answer
1k views

Harmonic coordinates on Riemannian manifolds

2 votes
0 answers
143 views

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

1 vote
0 answers
225 views

Is this function space a "classical" Sobolev space?