I have the same problem. Some thing is wrong in Sage 5.4.
You could use sparse=True to calculate the determinant, but Sage 4.6.1 is much
better. For my hankel determinant:
K = 30 , result = -9
Sage Version 5.4, Release Date: 2012-11-09
sparse= True
time = 0.00843095779419
K = 30 , r
On 11/14/2012 04:25 PM, Jeroen Demeyer wrote:
On 2012-11-14 08:43, P Purkayastha wrote:
sage: M.det()
[. still no answer after one minute .]
For what it's worth: it works after about 8 minutes.
It might be a corner case for the algorithm itself. From what cursory
reading I did, the
On 2012-11-14 08:43, P Purkayastha wrote:
>> sage: M.det()
>> [. still no answer after one minute .]
For what it's worth: it works after about 8 minutes.
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On 2012-11-14 09:10, Jeroen Demeyer wrote:
> On 2012-11-14 08:43, P Purkayastha wrote:
>> Looks like a bug in PARI?
> Indeed.
And PARI-2.5.3 (merged in sage-5.5.beta0) doesn't help either.
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On 2012-11-14 08:43, P Purkayastha wrote:
> Looks like a bug in PARI?
Indeed.
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sage
On 11/14/2012 06:54 AM, David Harvey wrote:
sage: version()
'Sage Version 4.8, Release Date: 2012-01-20'
sage: L = [-4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, -4, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
