User Karl Fabian

16 votes

Optimal search puzzle

answered Sep 25, 2023 at 0:02

9 votes

Two arcs in the complement of a disc must intersect?

answered Nov 28, 2023 at 0:07

8 votes

Radial behavior of dynamical map $x_{n+1}=2x_ny_n$, $y_{n+1}=1-2x_n^2$

answered Dec 30, 2023 at 14:21

7 votes

Covering a unit ball with balls half the radius

answered May 28, 2012 at 18:38

7 votes

Covering a unit ball with balls half the radius

answered May 29, 2012 at 0:32

7 votes

Non-rigorous reasoning in rigorous mathematics

answered Dec 4, 2012 at 16:01

6 votes

Is there always a way up?

answered Apr 11, 2023 at 22:44

5 votes

Accepted

maybe Faulhaber polynomial $S_{k}(x)=0$ have only rational roots $0,-\frac{1}{2},-1$

answered Apr 19, 2023 at 9:09

4 votes

Shadows and planar sections of polyhedra

answered Aug 28, 2021 at 18:50

4 votes

Accepted

What is the minimum and the maximum perimeter of a triangle with area $x$ that can be inscribed in a circle?

answered Dec 1, 2023 at 10:54

4 votes

Could somebody suggest a way to determine if a parallelogram contains another parallelogram?

answered Jun 14, 2021 at 8:12

3 votes

Is there a square with all corner points on the spiral $r=k\theta$, $0 \leq \theta \leq \infty$?

answered Jul 24, 2021 at 15:13

3 votes

A curious sequence of rationals: finite or infinite?

answered May 24, 2013 at 23:00

3 votes

Sorting interleaved sorted lists

answered Dec 31, 2014 at 14:58

3 votes

Harmonic function properties on $\mathbb R^3$

answered Dec 20, 2018 at 21:36

3 votes

Movement of repelled particles in a ball

answered Mar 25, 2020 at 22:19

3 votes

Does every ellipse inside a tetrahedron inside a ball fit in a triangle inside the ball?

answered Oct 2, 2012 at 14:16

2 votes

Critical thinking rail track problem

answered Mar 3, 2021 at 1:23

2 votes

Accepted

Proof of Von Neumann's debiasing algorithm

answered Dec 17, 2013 at 17:15

2 votes

Connectivity of points sampled in a grid

answered Jul 6, 2014 at 13:12

2 votes

How to determine if there exists a non-zero vector in the kernel

answered Nov 24, 2014 at 11:41

2 votes

Another colored balls puzzle (part II)

answered May 15, 2013 at 11:49

2 votes

Area of union of random circles in a plane

answered Sep 3, 2012 at 22:29

2 votes

What tools should I use for this problem?

answered Dec 5, 2021 at 16:31

2 votes

Area-differences for lattice triangles in a checkerboard

answered Mar 8, 2022 at 20:25

2 votes

Accepted

When do the centers of mass of a uniform convex planar region as a whole and of its boundary alone coincide?

answered Jul 27, 2023 at 9:46

2 votes

Is the sequence $\{n/\{ \sqrt{2}n\} \}$ uniformly distributed in $[0,1)$?

answered Apr 10, 2023 at 20:33

1 vote

Uniqueness of the zero of $f-f*G_\sigma$ with $f$ convex/concave

answered Aug 19, 2023 at 23:01

1 vote

Are there infinitely long arithmetic progressions in every increasing sequence of positive integers with bounded gaps between consecutive terms?

answered Nov 11, 2022 at 12:10

1 vote

Efficients method for finding a zero of a multilinear complex polynomial in an specified region

answered Aug 26, 2021 at 14:16

Stack Exchange Network

38 Answers

Optimal search puzzle

Two arcs in the complement of a disc must intersect?

Radial behavior of dynamical map $x_{n+1}=2x_ny_n$, $y_{n+1}=1-2x_n^2$

Covering a unit ball with balls half the radius

Covering a unit ball with balls half the radius

Non-rigorous reasoning in rigorous mathematics

Is there always a way up?

maybe Faulhaber polynomial $S_{k}(x)=0$ have only rational roots $0,-\frac{1}{2},-1$

Shadows and planar sections of polyhedra

What is the minimum and the maximum perimeter of a triangle with area $x$ that can be inscribed in a circle?

Could somebody suggest a way to determine if a parallelogram contains another parallelogram?

Is there a square with all corner points on the spiral $r=k\theta$, $0 \leq \theta \leq \infty$?

A curious sequence of rationals: finite or infinite?

Sorting interleaved sorted lists

Harmonic function properties on $\mathbb R^3$

Movement of repelled particles in a ball

Does every ellipse inside a tetrahedron inside a ball fit in a triangle inside the ball?

Critical thinking rail track problem

Proof of Von Neumann's debiasing algorithm

Connectivity of points sampled in a grid

How to determine if there exists a non-zero vector in the kernel

Another colored balls puzzle (part II)

Area of union of random circles in a plane

What tools should I use for this problem?

Area-differences for lattice triangles in a checkerboard

When do the centers of mass of a uniform convex planar region as a whole and of its boundary alone coincide?

Is the sequence $\{n/\{ \sqrt{2}n\} \}$ uniformly distributed in $[0,1)$?

Uniqueness of the zero of $f-f*G_\sigma$ with $f$ convex/concave

Are there infinitely long arithmetic progressions in every increasing sequence of positive integers with bounded gaps between consecutive terms?

Efficients method for finding a zero of a multilinear complex polynomial in an specified region