Mathematics
user avatar
user avatar
user avatar
ZFR
  • Member for 8 years, 5 months
  • Last seen this week
  • New York, NY, USA
Profile Activity
Stats
14,802
reputation
361k
reached
104
answers
759
questions
top 2% this year
Communities
View all
About

I am a PhD student in math in one of the US universities and I am deeply interested in Additive Combinatorics, classical Fourier Analysis and Mathematical Analysis.

I am also very grateful to all users who always support and help me.

Badges
View all badges
9
gold badges
33
silver badges
93
bronze badges
Top tags
View all tags
31
Score
280
Posts
32
Posts %
12
Score
79
Posts
9
Posts %
11
Score
82
Posts
10
Posts %
10
Score
105
Posts
12
Posts %
7
Score
42
Posts
5
Posts %
4
Score
74
Posts
9
Posts %
Top posts
View all questions and answers
All Questions Answers
Score Newest
question
21
Sum of series $\sum \limits_{k=1}^{\infty}\frac{\sin^3 3^k}{3^k}$
Jan 23, 2017
question
18
Infinite group has infinitely many subgroups, namely cyclic subgroups.
Nov 30, 2017
question
16
Erroneous proof that derivative of function is always continuous
Apr 15, 2021
question
15
Number which is simultaneously sum of 2 and 3 squares [closed]
Nov 25, 2017
question
15
Every separable metric space has a countable base
Jun 3, 2016
answer
15
$A+B+C+7$ is perfect square where $A,B,C$ numbers with repeating digits.
Oct 29, 2015
question
15
A finite set is closed
Jun 8, 2015
answer
10
If $\lim_{x \to \infty} (f(x)-g(x)) = 0$ then $\lim_{x \to \infty} (f^2(x)-g^2(x)) = 0\ $: False?
Nov 12, 2015
answer
10
Looking for a non-combinatorial proof that $a! \cdot b! \mid (a+b)!$
Feb 2, 2016
question
10
Ternary representation of Cantor set
Aug 30, 2015

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.