Stack Exchange Network

Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

  7. current community

    your communities

    more stack exchange communities

    company blog
Mathematics
Meta user
Network profile
1,202
reputation
9
13

Alexander

Undergratuate studen of mathematics.

3
answers
140
questions
~23k
people reached
  • Member for 6 years, 5 months
  • 208 profile views
  • Last seen May 21 at 12:25

Communities (4)

Top network posts

We respect a laser-like focus on one topic.

Top tags (60)

Score 6
Posts 30
Posts % 21
Score 1
Posts 33
Score 0
Posts 17
Score 0
Posts 13
Score 0
Posts 12
Score 0
Posts 10
View all tags →

Top posts (143) All Questions Answers | Votes Newest

7 How to show that $\frac{x^2}{x-1}$ simplifies to $x + \frac{1}{x-1} +1$ Jan 14 '13
7 What is the topological properties of $\mathbb R $ that makes it uncountable (as compared to $\mathbb Q $)? Nov 6 '14
6 Equivalence of definition of measure concentrated on a set $A $ Oct 3 '14
6 Prove the inequality $|xy|\leq\frac{1}{2}(x^2+y^2)$ Aug 18 '13
6 Can $\le$ be used insted of < in the definition of continuity? Jan 19 '14
5 Holomorphically simply connected implies simply connected Jul 1 '14
4 What is the Lebesgue measure of the set of numbers in $[0,1]$ that has two thirds of ones in their infinite base-2 expansion? Dec 13 '14
3 Example of topological space where there is a point and a subset $A $: $x \in \overline A $, but no sequence in $A $ converging to $x $? Nov 25 '14
3 Equivalence of definitions of measurable function: preimage of open set vs preimage of Borel set? Nov 14 '14
3 A probability function is determined on a dense set- Where is density used in the following proof? Dec 24 '14
View all questions and answers →

Badges (22)

Gold

—

Silver

9

Rarest

Bronze

13

Rarest

View all badges →