C.S.'s user avatar
C.S.'s user avatar
C.S.'s user avatar
C.S.
  • Member for 14 years, 4 months
  • Last seen more than a month ago
53 votes

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

49 votes

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

47 votes

Counterexamples in algebra?

35 votes

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

28 votes

A good book of functional analysis

14 votes

Fundamental problems whose solution seems completely out of reach

13 votes

Fundamental problems whose solution seems completely out of reach

12 votes

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

12 votes

Fundamental problems whose solution seems completely out of reach

10 votes
Accepted

Request for the proof of a result from Ramanujan's letter to Hardy.

9 votes

Old books still used

9 votes
Accepted

List of open problems of formal languages

8 votes

What's the "best" proof of quadratic reciprocity?

7 votes

What are your favorite instructional counterexamples?

6 votes

Examples of interesting false proofs

6 votes

Contest problems with connections to deeper mathematics

4 votes

Elementary+Short+Useful

4 votes

Examples of common false beliefs in mathematics

3 votes

Is Galois theory necessary (in a basic graduate algebra course)?

3 votes

The Ramanujan Problems

3 votes

Favorite popular math book

3 votes

Blackbox Theorems

3 votes

Good books on problem solving / math olympiad

2 votes

Shortest/Most elegant proof for $L(1,\chi)\neq 0$

2 votes

An example of a beautiful proof that would be accessible at the high school level?

2 votes

Are there locally compact groups which have no compact open subgroups and no discrete infinite cyclic subgroups?

2 votes

Suggestions for a good Measure Theory book

1 vote

A properties about expoential integral, 5.1.11 in Abramowitz and Stegun

1 vote

Elementary+Short+Useful

1 vote

Interesting mathematical documentaries