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Apr
9
accepted How to show that $\varphi(m_1)=\varphi(m_2)$ gives $m_1=m_2$?
Apr
7
comment How to show that $\varphi(m_1)=\varphi(m_2)$ gives $m_1=m_2$?
using Maple 14, I have checked the result is true. But theoretically I am willing to prove it. what to do ?
Apr
7
comment How to show that $\varphi(m_1)=\varphi(m_2)$ gives $m_1=m_2$?
In that case dear sir, I failed to prove the problem. Can you please help me ? :-(
Apr
7
comment How to show that $\varphi(m_1)=\varphi(m_2)$ gives $m_1=m_2$?
@AndréNicolas Basically we can show that each odd prime $p_i$ is a Fermat's prime. But without that information I am trying to complete the track. Won't it be possible sir ?
Apr
7
asked How to show that $\varphi(m_1)=\varphi(m_2)$ gives $m_1=m_2$?
Mar
28
accepted How to show $f$ is non-negative.
Mar
27
asked How to show $f$ is non-negative.
Feb
18
asked Which option should be true?
Feb
11
comment For what values of $a, n$ the number $2^a\cdot 3^n+1$ is prime?
@DietrichBurde So is there any site where if I put a list of values of $n$, we shall get which $2^a3^n+1$ will be prime when $a$ is given?
Feb
10
comment For what values of $a, n$ the number $2^a\cdot 3^n+1$ is prime?
Thank you. Suppose I want to check for $a=2$, $n=1,2,3,\cdots, 100$ how to do that ?
Feb
10
asked For what values of $a, n$ the number $2^a\cdot 3^n+1$ is prime?
Feb
4
asked what can we say about $\varphi^{-1}(2^a), \varphi^{-1}(2^\alpha), \varphi^{-1}(2^\beta)$ where $a=\alpha+\beta$?
Jan
27
comment Could you solve $x↑^n2=x↑^m2$?
What is W here ?
Jan
21
revised Determine values of k for a matrix to have a unique solution
$M =\left[ \begin{array}{cc} k^3 + 3k & k+5 & k+3 & k^5+(k+3)^2 \\ 0 & k & 1 & 3 \\ 0 & 0 & k^3+k^2-6k & k(k^2-9)\\ \end{array}\right]$
Jan
21
suggested approved edit on Determine values of k for a matrix to have a unique solution
Jan
19
revised Show that $rank(A) \ngeq \frac{[tr(A)]^2 }{tr(A^2)}$
$rank(A) \ngeq \frac{[tr(A)]^2 }{tr(A^2)}$
Jan
19
revised Find the nth power of a matrix
Added two tags
Jan
19
suggested approved edit on Find the nth power of a matrix
Jan
19
suggested approved edit on Show that $rank(A) \ngeq \frac{[tr(A)]^2 }{tr(A^2)}$
Jan
9
awarded  Nice Question