Hi,
When I using the following simple script to get a square dxd
inversible matrix (T) from a dxr matrix (T0), I got a memory overflow:
#######################
T=T0;rt=r;d=A.ncols();i=0
while rt != d:
while rt == rank(T.augment(matrix(d,1,{(i,0):1}))):
i+=1
T=T.augment(matrix(d,1,{(i,0):1}))
rt+=1
#######################
Since the matrix A is a dxd - with d equals to 1183 - that easily fits
into the memory (4GB), it seems strange to me that this script needs
more and more memory until reach a memory overflow. Maybe there is a
memory leak in the function rank or augment? Or, more likely, I did
something wrong when writing this script (since I'm a beginner in both
Sage and Python)?
The entire script (with the 1183x1183 matrix) is available here:
http://www.lri.fr/~oudinet/pub/script.sage
I'd appreciate any help.
Regards,
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