JRN's user avatar
JRN's user avatar
JRN's user avatar
JRN
  • Member for 13 years, 2 months
  • Last seen this week
  • Philippines
162 votes

Not especially famous, long-open problems which anyone can understand

105 votes

Mathematicians with both “very abstract” and “very applied” achievements

83 votes

Not especially famous, long-open problems which anyone can understand

31 votes

Which popular games have been studied mathematically?

24 votes

Mathematical habits of thought and action which would be of use to non-mathematicians

18 votes

Recreational mathematics: where to search?

18 votes

Nonequivalent definitions in Mathematics

16 votes
Accepted

What is the protocol for making modifications to someone else's proof to prove something slightly stronger?

13 votes

Means of Promoting Mathematics in Young Countries!

11 votes

Favorite popular math book

10 votes
Accepted

Number defined by a recursive binary sequence

9 votes

Demystifying complex numbers

9 votes
Accepted

covering disks with smaller disks

8 votes

Three-halves-free words (analogous to square-free)

7 votes

Is it possible to create an infinite sequence in which no subsequence is repeated 3 times in a row?

5 votes
Accepted

Is there evidence whether undergraduate math courses improve problem-solving?

4 votes

Definition of Prime Numbers

4 votes

Concatenation of strings

4 votes

Where to publish new mathematical identities?

3 votes

Fast matrix multiplication

3 votes

Polygonal billards programs

3 votes

What does a mathematician expect from mathematics education?

3 votes

Which popular games have been studied mathematically?

3 votes

Mathematicians who made important contributions outside their own field?

3 votes

Dense orbits in billiards

2 votes

Lecture on Fractals for Middle School Students

1 vote

Paper of Denis Simon on quadratic equations in dimensions 4, 5?

1 vote

Where to submit (relatively) easy solutions to known problems?

1 vote

Undergraduate Probability Topics

1 vote

journal to submit mathematic books' review