Mathematics
Fiktor's user avatar
Fiktor's user avatar
Fiktor's user avatar
Fiktor
  • Member for 13 years, 4 months
  • Last seen this week
  • St. Petersburg, Russia
Profile Activity
Stats
3,042
reputation
95k
reached
35
answers
11
questions
Communities
View all
Badges
View all badges
This user doesn’t have any gold badges yet.
21
silver badges
22
bronze badges
Top tags
View all tags
18
Score
5
Posts
11
Posts %
12
Score
5
Posts
11
Posts %
11
Score
3
Posts
7
Posts %
7
Score
3
Posts
7
Posts %
6
Score
6
Posts
13
Posts %
6
Score
2
Posts
4
Posts %
Top posts
View all questions and answers
All Questions Answers
Score Newest
answer
78
Prove that $\prod_{k=1}^{n-1}\sin\frac{k \pi}{n} = \frac{n}{2^{n-1}}$
Oct 30, 2010
question
31
Fundamental group of GL(n,C) is isomorphic to Z. How to learn to prove facts like this?
Aug 30, 2010
question
18
Matrix diagonalization theorems and counterexamples: reference-request.
Feb 19, 2014
question
13
In which commutative algebras does any derivation possess a flow?
Sep 19, 2010
question
11
Upper-triangular matrix is invertible iff its diagonal is invertible: C*-algebra case
Oct 25, 2010
question
7
How to prove the following resummation identity for Erdős–Borwein constant?
Sep 6, 2022
answer
7
Proper Measurable subgroups of $\mathbb R$
Aug 4, 2010
answer
6
Cutting the Cake Problem
Aug 14, 2010
answer
6
How do you show that $d\theta = \frac{x dy - y dx }{x^2 + y^2}$?
Oct 5, 2010
answer
5
Continuous function satisfying $f^{k}(x)=f(x^k)$
Aug 13, 2010
Top network posts
View all network posts
58
Is there any way to generate custom errors/warnings in LaTeX?
47
How to typeset subscript in usual text mode?
34
How to find a package name by a command name?
30
Should std::sort work with lambda function in c++0x/c++11?
24
How can boost::serialization be used with std::shared_ptr from C++11?

Your privacy

By clicking “Accept all cookies”, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy.