User Milo Brandt

14 votes

4 answers

4k views

Infinite Sum of Sines With Increasing Period

asked Oct 16, 2014 at 23:29

129 votes

1 answer

4k views

Is There An Injective Cubic Polynomial $\mathbb Z^2 \rightarrow \mathbb Z$?

asked Dec 18, 2014 at 23:06

41 votes

4 answers

2k views

What is the middle digit of $3^{100000}$?

asked Feb 14, 2015 at 5:29

29 votes

1 answer

2k views

Can Three Equilateral Triangles with Sidelength $s$ Cover A Unit Square?

asked Apr 7, 2015 at 2:42

32 votes

2 answers

1k views

Random Walk Without Repetitions

asked Apr 26, 2015 at 15:56

45 votes

3 answers

1k views

Combinatorial Argument for Exponential and Logarithmic Function Being Inverse

asked Aug 17, 2019 at 2:18

3 votes

1 answer

1k views

If a continuous function is locally injective and injective on the boundary, is it injective?

asked Aug 1, 2016 at 15:35

21 votes

2 answers

792 views

Differential forms without derivatives?

asked Feb 8, 2020 at 4:49

11 votes

1 answer

722 views

Why is an interval used to define homotopy, categorically speaking?

asked Jul 3, 2017 at 2:58

30 votes

2 answers

627 views

Can algebraic numbers be compared using only rational arithmetic?

asked Feb 6, 2018 at 2:34

8 votes

2 answers

597 views

The size of sets of positive integers not having distinct subsets with equal size and sum

asked Jul 15, 2016 at 22:50

5 votes

0 answers

472 views

Can this sum over the q-Pochhammer symbol be simplified?

asked May 15, 2016 at 15:01

11 votes

0 answers

456 views

Are there any known Collatz-like results?

asked Jan 12, 2020 at 15:36

17 votes

1 answer

383 views

Is It Always Possible to Draw A Connected Compact Set in $\mathbb R^2$?

asked Feb 28, 2015 at 20:08

8 votes

1 answer

326 views

Is The Statement $b^n\equiv 1\pmod n$ equivalent to "$x\mapsto b^x-x\pmod n$ is a bijection"?

asked Feb 16, 2015 at 5:16

7 votes

1 answer

300 views

Do partitions of a square into two sets always connect one pair of opposite edges?

asked Jun 18, 2018 at 20:45

6 votes

1 answer

299 views

ZF and The Cardinality of The Set of Finite Subsets

asked Dec 15, 2014 at 2:18

11 votes

1 answer

278 views

The "Largeness" of Subsets of the Natural Numbers

asked Sep 27, 2014 at 23:01

8 votes

0 answers

278 views

The Existence of "Simple" Prime Generating Functions

asked Oct 6, 2014 at 0:12

11 votes

1 answer

236 views

Is It Always Possible to Cross a Surface Exactly Once?

asked Jan 28, 2016 at 3:44

4 votes

3 answers

225 views

Does the following Collatz-like bijection have divergent trajectories?

asked Aug 16, 2021 at 23:05

2 votes

2 answers

166 views

A Generalization of Carmichael Numbers

asked Oct 26, 2014 at 17:27

5 votes

1 answer

153 views

Quotient Spaces Defined By Bijection

asked Mar 14, 2016 at 19:47

9 votes

1 answer

127 views

Connected Partitions of Spheres

asked Jan 7, 2019 at 20:19

3 votes

0 answers

121 views

Geometric Intersection Numbers on Twice-Punctured Plane

asked Aug 20, 2017 at 14:33

4 votes

1 answer

106 views

How badly are distances distorted by mapping a rectangle to a line?

asked Nov 8, 2020 at 0:29

4 votes

1 answer

105 views

Optimal Strategy Game of Communicating without Overlap

asked Nov 8, 2014 at 0:29

5 votes

1 answer

102 views

Intersection of Cylinders of Simply Connected Sets in $\mathbb C^2$?

asked Dec 22, 2019 at 22:28

2 votes

1 answer

101 views

Commutative Diagrams and Polynomials

asked Oct 25, 2014 at 4:13

1 vote

1 answer

89 views

Convexity properties of subset of the plane in which among any n+1 points, one pair can be connected by line segment

asked Nov 25, 2017 at 22:08

Stack Exchange Network

33 Questions

Infinite Sum of Sines With Increasing Period

Is There An Injective Cubic Polynomial $\mathbb Z^2 \rightarrow \mathbb Z$?

What is the middle digit of $3^{100000}$?

Can Three Equilateral Triangles with Sidelength $s$ Cover A Unit Square?

Random Walk Without Repetitions

Combinatorial Argument for Exponential and Logarithmic Function Being Inverse

If a continuous function is locally injective and injective on the boundary, is it injective?

Differential forms without derivatives?

Why is an interval used to define homotopy, categorically speaking?

Can algebraic numbers be compared using only rational arithmetic?

The size of sets of positive integers not having distinct subsets with equal size and sum

Can this sum over the q-Pochhammer symbol be simplified?

Are there any known Collatz-like results?

Is It Always Possible to Draw A Connected Compact Set in $\mathbb R^2$?

Is The Statement $b^n\equiv 1\pmod n$ equivalent to "$x\mapsto b^x-x\pmod n$ is a bijection"?

Do partitions of a square into two sets always connect one pair of opposite edges?

ZF and The Cardinality of The Set of Finite Subsets

The "Largeness" of Subsets of the Natural Numbers

The Existence of "Simple" Prime Generating Functions

Is It Always Possible to Cross a Surface Exactly Once?

Does the following Collatz-like bijection have divergent trajectories?

A Generalization of Carmichael Numbers

Quotient Spaces Defined By Bijection

Connected Partitions of Spheres

Geometric Intersection Numbers on Twice-Punctured Plane

How badly are distances distorted by mapping a rectangle to a line?

Optimal Strategy Game of Communicating without Overlap

Intersection of Cylinders of Simply Connected Sets in $\mathbb C^2$?

Commutative Diagrams and Polynomials

Convexity properties of subset of the plane in which among any n+1 points, one pair can be connected by line segment