current community
chat
MathOverflow
MathOverflow Meta
your communities
Sign up
or
log in
to customize your list.
more stack exchange communities
company blog
Stack Exchange
Inbox
Reputation and Badges
sign up
log in
tour
help
Tour
Start here for a quick overview of the site
Help Center
Detailed answers to any questions you might have
Meta
Discuss the workings and policies of this site
About Us
Learn more about Stack Overflow the company
Business
Learn more about hiring developers or posting ads with us
MathOverflow
Questions
Tags
Users
Badges
Unanswered
Ask Question
Profile
Activity
David Feldman
Meta User
Network Profile
Reputation
8,207
8.2k
6.9k
5.6k
2013
2014
2015
2016
Top tag
nt.number-theory
Next privilege
10,000 Rep.
Access moderator tools
Badges
6
44
101
Newest
Notable Question
Next badge
65/100
Sportsmanship
Impact
~
358k
people reached
36 posts edited
1 helpful flag
379 votes cast
summary
answers
questions
tags
badges
favorites
bounties
reputation
all actions
40
Answers
newest
activity
votes
148
Mathematical “urban legends”
Jan 25 '11 at 6:49
61
Does a referee have to check carefully the proof ?
Dec 11 '10 at 23:09
36
Not especially famous, long-open problems which anyone can understand
Jun 23 '12 at 8:34
32
Mathematical “urban legends”
Jan 24 '11 at 23:39
24
What is the simplest, most elementary proof that a particular number is transcendental?
Dec 14 '10 at 6:43
23
Mazur's unpublished manuscript on primes and knots?
Feb 15 '11 at 4:12
15
Why is a topology made up of 'open' sets?
Dec 14 '10 at 21:13
13
Music: mathematical point of view (revised)
Jul 5 '12 at 18:22
12
Zero-knowledge proof that 0 = 1
Dec 10 '10 at 7:20
11
Why does the Riemann zeta function have non-trivial zeros?
Dec 22 '10 at 10:01
7
probability theory for combinatorialists
Mar 29 '12 at 19:39
6
Not especially famous, long-open problems which anyone can understand
Jun 23 '12 at 19:09
4
On distances between points on the plane
Jun 16 '12 at 4:30
4
On Pseudo-finite topological spaces
Jun 9 '12 at 17:02
4
Why do we teach calculus students the derivative as a limit?
May 19 '12 at 6:02
4
Simple but serious problems for the edification of non-mathematicians
Feb 1 '11 at 3:39
4
Statistics of Extended GCD
Jan 23 '11 at 4:20
4
Recent work on hypergeometric functions
Dec 24 '10 at 7:44
3
Good combinatorics textbooks for teaching undergraduates?
May 17 '12 at 4:46
3
'Important' applications of p-adic numbers outside of algebra (and number theory).
Dec 26 '11 at 17:14
3
Reference in Riemann Surfaces
Mar 26 '11 at 7:57
2
A generalization of Erdős–Newman–Mirsky?
May 18 '15 at 22:37
2
Conditional probability with permutations
Oct 4 '12 at 18:44
2
On One point Lindeloffication of topological spaces
Jun 17 '12 at 18:56
2
Can continuity of a function be checked by restricting to smooth curves?
Jun 8 '12 at 3:00
2
Frames and completeness
Jun 6 '12 at 19:36
2
Is the set of undecidable problems decidable?
Nov 20 '11 at 20:11
2
Examples of two different descriptions of a set that are not obviously equivalent?
Jan 23 '11 at 6:58
2
Strong induction without a base case
Dec 24 '10 at 22:31
2
What is the simplest, most elementary proof that a particular number is transcendental?
Dec 15 '10 at 2:25
MathOverflow works best with JavaScript enabled