> -Original Message-
> From: r-devel-boun...@r-project.org
> [mailto:r-devel-boun...@r-project.org] On Behalf Of Olaf Mersmann
> Sent: Friday, July 30, 2010 3:01 AM
> To: Robin Hankin
> Cc: R-devel@r-project.org; Martin Maechler
> Subject: Re: [Rd] transpose of complex matrices in R
>
> H
Hi,
On 30.07.2010, at 11:35, Robin Hankin wrote:
> 3. Try to define a t.complex() function:
> t.complex <- function(x){t(Conj(x))}
> (also fails because of recursion)
Try this version:
t.complex <- function(x) {
xx <- Conj(x)
.Internal(t.default(xx))
}
You get infinite recursion in
When one is working with complex matrices, "transpose" very nearly
always means
*Hermitian* transpose, that is, A[i,j] <- Conj(A[j,i]).
One often writes A^* for the Hermitian transpose.
I believe that I have actually (many years ago) used a true complex transpose, but I agree
that one more of
Hello Peter
thanks for this.
On 07/30/2010 11:01 AM, peter dalgaard wrote:
What's wrong with
t.complex<- function(x) t.default(Conj(x))
M<- matrix(rnorm(4)+1i*rnorm(4),2)
M
It's not going to help with the cross products though.
As a general matter, in my book, transpose is tran
Robin Hankin wrote:
Hello everybody
When one is working with complex matrices, "transpose" very nearly
always means
*Hermitian* transpose, that is, A[i,j] <- Conj(A[j,i]).
One often writes A^* for the Hermitian transpose.
I have only once seen a "real-life" case
where transposition does not
On Jul 30, 2010, at 11:35 AM, Robin Hankin wrote:
> Hello everybody
>
> When one is working with complex matrices, "transpose" very nearly always
> means
> *Hermitian* transpose, that is, A[i,j] <- Conj(A[j,i]).
> One often writes A^* for the Hermitian transpose.
>
> I have only once seen a
Hello everybody
When one is working with complex matrices, "transpose" very nearly
always means
*Hermitian* transpose, that is, A[i,j] <- Conj(A[j,i]).
One often writes A^* for the Hermitian transpose.
I have only once seen a "real-life" case
where transposition does not occur simultaneously
