[Numpy-discussion] matrix problem: float to matrix power
Alan G Isaac
aisaac@american....
Thu Nov 1 14:20:11 CDT 2007
On Wed, 31 Oct 2007, Timothy Hochberg apparently wrote:
> because M**n results in the matrix power of n. It would be
> confusing if n**M did a broadcast element wise power.
In an attempt to summarize:
scalar to a matrix power
1. may have been overlooked, or may have been omitted as
confusing
2. if overlooked there are two possible answers as to what
it could reasonably be
a. a**m = exp(ln(a)*m) natural definition
b. a**m = a**m.A broadcasting
In languages that provide an answer, I have the impression
that the answer is usually (b). (E.g., GAUSS.) However
perhaps in NumPy this is the least interesting way to go?
But it is what I was expecting.
Cheers,
Alan Isaac
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