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  • 91 votes cast
Aug
23
asked SVD of matrix whose columns are orthogonal vectors
Aug
7
awarded  Critic
Aug
7
accepted Inequality $\left(\frac {17}{25}\right)^k \le 10^{-5}$ - Solve for $k$
Aug
7
comment Inequality $\left(\frac {17}{25}\right)^k \le 10^{-5}$ - Solve for $k$
Understood.. Thanks!
Aug
7
comment Inequality $\left(\frac {17}{25}\right)^k \le 10^{-5}$ - Solve for $k$
So I would get : $ k \le log_\frac{17}{25} {10^{-5}}$ ?
Aug
7
asked Inequality $\left(\frac {17}{25}\right)^k \le 10^{-5}$ - Solve for $k$
Feb
21
comment If $A$ is an invertible $n\times n$ complex matrix and some power of $A$ is diagonal, then $A$ can be diagonalized
"If $A^n$ is a diagonal matrix, then clearly $A^{n−1}=I$", Why?
Feb
20
suggested rejected edit on Solve recurrence equation $T(n)=2T(n-1)-4$
Feb
20
revised Solve recurrence equation $T(n)=2T(n-1)-4$
added 94 characters in body
Feb
20
answered Solve recurrence equation $T(n)=2T(n-1)-4$
Feb
14
awarded  Custodian
Feb
14
reviewed No Action Needed Show that $x^4 + 8$ is irreducible over Z
Feb
14
reviewed Reviewed Find appropriate number fill in the blanks
Feb
14
revised How to prove this following trigonometric equation?
added 3 characters in body
Feb
14
answered How to prove this following trigonometric equation?
Feb
14
awarded  Enthusiast
Feb
11
accepted $A\in M_n(\mathbb C)$ is normal $\iff \forall P\in M_n(\mathbb C) : \ P^{*}AP$ is normal where $P$ is normal?
Feb
11
comment $A\in M_n(\mathbb C)$ is normal $\iff \forall P\in M_n(\mathbb C) : \ P^{*}AP$ is normal where $P$ is normal?
Great:) Thank you very much. Sorry for misleading you (It was kinda obvious to me when I wrote it but I can see why it isn't obvious in general).
Feb
11
revised $A\in M_n(\mathbb C)$ is normal $\iff \forall P\in M_n(\mathbb C) : \ P^{*}AP$ is normal where $P$ is normal?
added 21 characters in body; edited title
Feb
11
comment $A\in M_n(\mathbb C)$ is normal $\iff \forall P\in M_n(\mathbb C) : \ P^{*}AP$ is normal where $P$ is normal?
I want $P^*AP$ to be normal for all $P$.