[SciPy-user] null space of a matrix

Fernando Perez Fernando.Perez at colorado.edu
Wed Jun 29 19:29:49 CDT 2005


Robert Kern wrote:
> Ryan Krauss wrote:
> 
>>Thanks to Nils and Robert for catching the complex conjugate thing.  I 
>>am going to be working with complex matrices and not knowing that may 
>>have caused me a bit of pain.
>>
>>When you transpose a complex matrix in Matlab it always takes the 
>>complex conjugate transpose.  Is this desirable behavior for SciPy/Numeric?
> 
> 
> No. Numeric arrays are not matrices. transpose() performs a structural 
> operation, not a linear algebraic operation.

Besides, even for mathematical matrices, transposition and conjugation are 
distinct operations.  Why matlab joins them is beyond me, and IMHO beyond 
mathematical sense.

Cheers,

f



More information about the SciPy-user mailing list