Jens's user avatar
Jens's user avatar
Jens's user avatar
Jens
  • Member for 6 years, 8 months
  • Last seen more than a week ago
  • Copenhagen
43 votes
2 answers
3k views

Proving a jigsaw is possible

23 votes
1 answer
3k views

Longest path in a square grid

19 votes
1 answer
513 views

Strategy for board game 2

15 votes
4 answers
551 views

Selecting a menu

10 votes
2 answers
460 views

How many mutually orthogonal circles are possible?

10 votes
2 answers
762 views

Overlapping circles covering polygon

7 votes
0 answers
740 views

Dividing a graph into $k$ subgraphs

6 votes
4 answers
355 views

Minimum number of marked squares on $n × n$ board

6 votes
1 answer
4k views

Largest inscribed rectangle in sector

5 votes
3 answers
164 views

Quarter circle train tracks 2

5 votes
2 answers
1k views

Arithmetic-geometric series which includes Fibonacci

4 votes
0 answers
133 views

Maximum path crossings in a square grid

3 votes
2 answers
96 views

Curve for similar triangles

3 votes
0 answers
77 views

Pairing of elements

2 votes
1 answer
55 views

Number of unique cubes with one red cube in every $1*1*4$ segment

2 votes
1 answer
235 views

Can the sum of a finite series equal $\pi$?

2 votes
0 answers
46 views

Construct a bounded infinite sequence $x_0, x_1, x_2,$ . . . such that $|x_i − x_j ||i − j|^a ≥ 1$

2 votes
1 answer
47 views

Curve of center of third circle

2 votes
2 answers
84 views

Generating equation for Diophantine equation

2 votes
1 answer
349 views

Probability 3 points are collinear

2 votes
2 answers
1k views

A directed complete graph with equal number of incoming and outgoing edges [duplicate]

1 vote
3 answers
209 views

Is integration by parts the best method to solve this integral?

1 vote
1 answer
85 views

Permutation of boxes with two colors

1 vote
1 answer
81 views

Point in a square

1 vote
2 answers
98 views

Integral of $(1-x^a)^\frac{1}{a}$

1 vote
2 answers
111 views

On a circle, will a point moving in irrational steps ever land at a point it has been at previously?

1 vote
1 answer
55 views

Two points in a circle

1 vote
3 answers
93 views

Summing sines of different frequencies

1 vote
1 answer
207 views

Minimum moves needed for everyone to meet

1 vote
0 answers
154 views

Paths from one corner to another