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
MathOverflow
Questions
Tags
Users
Badges
Unanswered
Ask Question
Profile
Activity
Gerald Edgar
Meta User
Network Profile
Reputation
19,784
top
2%
overall
19.8k
15.1k
10.4k
2012
2013
2014
2015
Top tag
measure-theory
Next privilege
20,000 Rep.
Access 'trusted user' tools
Badges
1
44
111
Newest
Nice Answer
Next badge
191/300
Civic Duty
Impact
~
1.2m
people reached
41 posts edited
4 helpful flags
191 votes cast
summary
answers
questions
tags
badges
favorites
bounties
reputation
all actions
492
Answers
newest
activity
votes
84
What are your favorite instructional counterexamples?
Mar 6 '10 at 14:38
71
Most interesting mathematics mistake?
Oct 17 '09 at 17:23
64
Which math paper maximizes the ratio (importance)/(length)?
Dec 1 '09 at 13:29
60
Which mathematicians have influenced you the most?
Nov 14 '09 at 19:43
37
Is it best to run or walk in the rain?
Nov 18 '09 at 13:09
36
“Closed-form” functions with half-exponential growth
Nov 9 '10 at 19:30
31
Jokes in the sense of Littlewood: examples?
Sep 25 '10 at 14:07
31
What is the indefinite sum of tan(x)?
Oct 21 '10 at 0:23
31
Blackboard rendering of math fonts
Nov 18 '09 at 13:30
29
Which journals publish expository work?
Feb 17 '10 at 12:37
28
Are there non-reflexive vector spaces isomorphic to their bi-dual?
Oct 28 '10 at 15:44
27
Still Difficult After All These Years
Nov 2 '10 at 18:27
27
Which journals publish expository work?
Feb 17 '10 at 16:31
26
Is a inverse limit of compact spaces again compact ?
Mar 18 '10 at 15:38
26
Best online mathematics videos?
Oct 21 '09 at 20:44
22
Rediscovery of lost mathematics
Jul 18 '14 at 2:33
22
The concept of Duality
Aug 26 '11 at 0:28
22
Undergraduate Level Math Books
Oct 16 '09 at 19:03
21
Mathematical “urban legends”
May 23 '11 at 21:24
20
What are the reasons for considering rings without identity?
Apr 26 '10 at 12:12
20
Different ways of proving that two sets are equal
Feb 26 '10 at 18:38
19
When has pure mathematics been influenced by the social context of mathematicians?
Jul 1 '12 at 16:57
19
Mathematical ideas named after places
May 11 '11 at 15:17
19
If $f$ is infinitely differentiable then $f$ coincides with a polynomial
May 8 '11 at 2:12
19
Interesting applications (in pure mathematics) of first-year calculus
Aug 10 '10 at 18:01
19
What are the most misleading alternate definitions in taught mathematics?
Dec 4 '09 at 23:54
18
Can there be a measurable set that integrals have the same given value if their integral on $\mathbb{R}$ are the same?
Mar 14 '14 at 13:52
18
Interesting conjectures “discovered” by computers and proved by humans?
Mar 25 '12 at 13:09
18
Making N (set of all positive integers) a group
May 23 '10 at 2:36
17
Parametrization of the boundary of the Mandelbrot set
Dec 8 '10 at 17:54
MathOverflow works best with JavaScript enabled