Stack Exchange Network

Stack Exchange network consists of 174 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
5,355
reputation
1
21
48

Babak Miraftab

enter image description here

111
answers
45
questions
~92k
people reached

Communities (6)

Top Network Posts

Top Tags (89)

Score 151
Posts 59
Posts % 38
Score 144
Posts 58
Score 56
Posts 13
Score 27
Posts 11
Score 20
Posts 7
Score 18
Posts 11
View all tags →

Top Posts (156) All Questions Answers | Votes Newest

36 Example of a Borel set that is neither $F_\sigma$ nor $G_\delta$ Oct 17 '11
21 Does $\sum\limits_{n=1}^\infty\frac{1}{\sqrt{n}+\sqrt{n+1}}$ converge? Jun 24 '12
17 Proving a trig identity: $\frac{\sin(A + B)}{\sin(A - B)}=\frac{\tan A + \tan B}{\tan A - \tan B}$ Feb 8 '14
17 The limit of $\tan(n)$ Nov 20 '14
16 Why does $PSL(2,\mathbb C)\cong PGL(2,\mathbb C)$ but $PSL(2,\mathbb R) \not\cong PGL(2,\mathbb R)$? Mar 18 '12
15 If in a group $G$, we have $a^5 = e$ and $aba^{-1} = b^2$ for some $a$, $b$ in $G$, then what is the order of $b$? Apr 2 '14
12 Number of solutions of $x^2_1+\dots+x^2_n=0,$ $x_i\in \Bbb{F}_q.$ Aug 16 '12
11 A characteristic subgroup is a normal subgroup Jun 3 '12
10 Group question: only one element $x$ with order $n>1$, then $x\in Z(G)$ Apr 12 '12
7 order of element in symmetric group Jan 25 '12
View all questions and answers →

Badges (70)

Gold

1

Rarest

Silver

21

Rarest

Bronze

48

Rarest

View all badges →