Skip to main content
Mathematics
dfeuer's user avatar
dfeuer's user avatar
dfeuer's user avatar
dfeuer
  • Member for 12 years, 9 months
  • Last seen more than a week ago
Profile Activity
Stats
9,119
reputation
1.1m
reached
315
answers
34
questions
Communities
View all
About

I'm an amateur singer. My favorite composers (most of whom I have never sung) include: Johann Sebastian Bach, Ludwig von Beethoven, Gustav Holst, Модест Петрович Мусоргский (Modest Mussorgsky), Maurice Ravel, Pēteris Vasks, Eric Whitacre, Benjamin Britten, Ysaye Barnwell, Samuel Barber, Antonín Leopold Dvořák, Пётр Ильи́ч Чайко́вский (Pyotr Ilyich Tchaikovsky), Николай Андреевич Римский-Корсаков (Nikolay Rimsky-Korsakov), and Paul Simon.

Pronouns: he/his/him

Badges
View all badges
3
gold badges
37
silver badges
64
bronze badges
Top tags
View all tags
161
Score
49
Posts
14
Posts %
67
Score
31
Posts
9
Posts %
62
Score
32
Posts
9
Posts %
55
Score
22
Posts
6
Posts %
33
Score
15
Posts
4
Posts %
31
Score
16
Posts
5
Posts %
Top posts
View all questions and answers
52
Why is empty set an open set?
Jul 19, 2013
48
Existence of non-constant continuous functions
Oct 13, 2011
30
Motivation for/history of Jacobi's triple product identity
Jul 3, 2013
22
Matrix Algebra Question (Linear Algebra)
Oct 6, 2013
18
Why does factoring eliminate a hole in the limit?
Aug 7, 2013
15
How can I show that a sequence of regular polygons with $n$ sides becomes more and more like a circle as $n \to \infty$?
Aug 28, 2013
13
Unprovable unprovability
Jun 12, 2013
13
$\mathbb Q$ is not the direct product of two non-trivial groups.
Dec 7, 2013
12
How do you prove that the dunce cap is not a surface?
Dec 4, 2011
12
nitpicking the definition of a polynomial function
Oct 18, 2013
Top Meta posts
24
28
32
Add "teaching math" to the on-topic list
19
Examples of poor review audits
18
Questions completely changed
18
Courtesy/Etiquette: Writing an Almost-Identical Answer just After the Previous.
14
Level of experience before answering questions
Top network posts
View all network posts
55
What is the purpose of Rank2Types?
47
What is predicativity?
42
Why does multiplication only short circuit on one side
34
How can natural numbers be represented to offer constant time addition?
29
Who invented proxy passing and when?