Mathematics
Tien Kha Pham's user avatar
Tien Kha Pham's user avatar
Tien Kha Pham's user avatar
Tien Kha Pham
  • Member for 9 years, 3 months
  • Last seen more than a week ago
  • Ho Chi Minh City, Vietnam
Profile Activity
Stats
2,960
reputation
84k
reached
25
answers
83
questions
Communities
View all
Badges
View all badges
This user doesn’t have any gold badges yet.
19
silver badges
34
bronze badges
Top tags
View all tags
28
Score
8
Posts
7
Posts %
8
Score
9
Posts
8
Posts %
3
Score
23
Posts
21
Posts %
2
Score
10
Posts
9
Posts %
2
Score
9
Posts
8
Posts %
0
Score
9
Posts
8
Posts %
Top posts
View all questions and answers
All Questions Answers
Score Newest
answer
13
Proof: if $p$ is prime, and $0<k<p$ then $p$ divides $\binom pk$
Jan 25, 2015
question
13
If $A^3=A+I$, then $\det A>0$
Jan 18, 2015
question
13
$P(z)=0$ iff $Q(z)=0$, $P(z)=1$ iff $Q(z)=1$. Prove that $P(x)=Q(x)$ for all $x$
Jan 25, 2015
question
12
If $\mathrm{Tr}(A)=0$ then $T=R^{-1}AR$ has all entries on its main diagonal equal to $0$
Feb 9, 2015
question
12
The sequence $a_1 = \frac{1}{2}, a_2 = 1, a_{n+1} = \frac{na_n+1}{a_{n-1}+n}$ is decreasing
Jun 29, 2017
question
8
When is the quotient ring finite?
Dec 3, 2015
answer
7
Prove that $a+b$ can't divide $a^a+b^b$ nor $a^b+b^a$
Jan 24, 2015
question
7
Every infinite set has an infinite countable subset?
Jan 30, 2015
question
6
If $\sum_{n=1}^{\infty} a_n$ converges, then so does $\sum_{n=1}^{\infty} a_n^{\frac{n}{n+1}}$
Feb 15, 2015
answer
5
How to factorize $n^5+n+1$?
Feb 13, 2015
Top network posts
View all network posts
5
Examples showing necessity and advantage of emperical definition of probability

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.