Jan Bohr's user avatar
Jan Bohr's user avatar
Jan Bohr's user avatar
Jan Bohr
  • Member for 8 years, 1 month
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12 votes
3 answers
944 views

Why is a Riemannian metric $g$?

12 votes
2 answers
573 views

Are there exotic balls?

10 votes
0 answers
336 views

Lifting spectral gap to covering space

10 votes
1 answer
398 views

Dense subset of cut locus

8 votes
1 answer
373 views

Harmonic functions without critical points (global isothermal coordinates)

7 votes
0 answers
244 views

Quotient of measurable subspace measurable?

7 votes
2 answers
174 views

Find $(M,\partial M)$ with injective $H_k(\partial M)\rightarrow H_k(M)$.

6 votes
1 answer
518 views

$xf$ smooth $\Rightarrow$ $f$ smooth?

5 votes
0 answers
313 views

Is the natural norm on the exterior algebra submultiplicative?

5 votes
1 answer
326 views

Extending strongly convex sets

4 votes
1 answer
120 views

Are points negligible for weak derivative in dimension 2?

4 votes
0 answers
138 views

Cauchy's integral formula with high tech methods

4 votes
0 answers
82 views

Dimension via Sobolev spaces?

3 votes
0 answers
105 views

Is $C(\mathbb{R})\subset \mathbb{R}^\mathbb{R}$ measurable? [duplicate]

3 votes
0 answers
117 views

Distributional derivative only generalization?

3 votes
0 answers
102 views

Range of Lifted Differential Operators

3 votes
1 answer
180 views

Are isolated singularities always cone-like?

3 votes
0 answers
64 views

Function spaces on manifolds via category theory

3 votes
0 answers
45 views

Homeomorphisms *as* a subset

2 votes
0 answers
72 views

What information is contained in the 'list of cells' of CW-complexes

2 votes
1 answer
82 views

Heine-Borel property of symbol spaces

2 votes
2 answers
381 views

Winding number and zeroes of a holomorphic map

2 votes
1 answer
76 views

Convergence of maximum points on compact sets

2 votes
1 answer
293 views

Extension of Pseudodifferential Operator to the real line

2 votes
1 answer
152 views

Manifold with unit balls of unbounded volume

2 votes
0 answers
109 views

Notions of Convexity

1 vote
0 answers
52 views

Extension to Borel measure

1 vote
0 answers
129 views

Proof compactness of adjoint operators

1 vote
0 answers
19 views

Fixed points of operators with wavefront constraint

0 votes
0 answers
52 views

Heuristics of overdetermined systems made precise