User 5th decile

17 votes

1 answer

564 views

Covering the disk with a family of infinite total measure

asked Nov 9, 2019 at 21:13

15 votes

1 answer

547 views

Characterization of a sphere: every "sub-sphere" has two centers

asked Dec 29, 2017 at 14:18

15 votes

2 answers

755 views

(Non)existence of mirrors with more than two foci

asked Mar 30, 2015 at 10:50

13 votes

1 answer

366 views

Covering the disk with a family of infinite total measure - the convex sequel

asked Nov 10, 2019 at 18:16

11 votes

2 answers

811 views

Do circular pipes maximize flow rate?

asked Jun 8, 2013 at 13:11

7 votes

0 answers

237 views

Sard's theorem for superharmonic functions: less regularity required?

asked Mar 15, 2022 at 12:05

6 votes

2 answers

385 views

Certain partial integrations in quantum mechanics

asked Jun 20, 2013 at 11:51

4 votes

0 answers

77 views

Software reference for combinatorial design

asked Jan 4 at 14:37

3 votes

1 answer

243 views

any ellipse with rational axes and circumference?

asked Jun 12, 2013 at 15:34

3 votes

1 answer

357 views

two boy scouts problems

asked May 14, 2013 at 12:00

3 votes

0 answers

73 views

On the principal eigenvector of an elliptic operator

asked May 19, 2016 at 8:46

2 votes

0 answers

66 views

On two functions with isodirectional gradients

asked May 23, 2016 at 15:15

2 votes

0 answers

52 views

A.e. global existence of solution to 'encased' n-body problem already somewhere in the literature?

asked Nov 7, 2021 at 16:25

2 votes

2 answers

503 views

About a "magical" rearrangement-type inequality (used to prove Chandrasekhar mass limit in Hawking & Ellis' book)

asked Jan 21, 2022 at 19:40

2 votes

4 answers

311 views

polynomial zero within a square

asked May 12, 2013 at 15:58

2 votes

0 answers

66 views

only solution to wave equation under certain restriction?

asked Dec 22, 2014 at 20:20

2 votes

2 answers

398 views

"Generalisation" of one-parameter semigroups

asked Sep 16, 2015 at 11:38

1 vote

0 answers

82 views

Scattering in (pseudo-)Riemannian spaces

asked Mar 7, 2016 at 11:29

1 vote

0 answers

49 views

non-conical support of fundamental solution possible?

asked Nov 15, 2016 at 14:06

1 vote

0 answers

46 views

Optimal orbital tranfers: reference for statements & proofs

asked Feb 21 at 14:05

1 vote

1 answer

190 views

Can one explore a surface along ‘piecewise planar’ curves?

asked Apr 26, 2022 at 18:07

1 vote

0 answers

166 views

A question about Stroock's notes on the Weyl lemma

asked Mar 2, 2020 at 18:50

0 votes

0 answers

54 views

linear functions/hyperplanes vs. convex functions/convex sets in Hilbert space

asked Feb 26, 2019 at 16:51

0 votes

0 answers

131 views

“Chapman-Kolmogorov”-convolution vs. smoothness

asked Feb 13, 2020 at 12:20

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24 Questions

Covering the disk with a family of infinite total measure

Characterization of a sphere: every "sub-sphere" has two centers

(Non)existence of mirrors with more than two foci

Covering the disk with a family of infinite total measure - the convex sequel

Do circular pipes maximize flow rate?

Sard's theorem for superharmonic functions: less regularity required?

Certain partial integrations in quantum mechanics

Software reference for combinatorial design

any ellipse with rational axes and circumference?

two boy scouts problems

On the principal eigenvector of an elliptic operator

On two functions with isodirectional gradients

A.e. global existence of solution to 'encased' n-body problem already somewhere in the literature?

About a "magical" rearrangement-type inequality (used to prove Chandrasekhar mass limit in Hawking & Ellis' book)

polynomial zero within a square

only solution to wave equation under certain restriction?

"Generalisation" of one-parameter semigroups

Scattering in (pseudo-)Riemannian spaces

non-conical support of fundamental solution possible?

Optimal orbital tranfers: reference for statements & proofs

Can one explore a surface along ‘piecewise planar’ curves?

A question about Stroock's notes on the Weyl lemma

linear functions/hyperplanes vs. convex functions/convex sets in Hilbert space

“Chapman-Kolmogorov”-convolution vs. smoothness