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Re: [Axiom-developer] emacs mode
From: |
Martin Rubey |
Subject: |
Re: [Axiom-developer] emacs mode |
Date: |
03 Oct 2007 10:19:47 +0200 |
User-agent: |
Gnus/5.09 (Gnus v5.9.0) Emacs/21.4 |
(I hope I do not offend you by forwarding this to the lists)
Francois Maltey <address@hidden> writes:
> When I test linear algebra I noticed that nullSpace return a basis of the
> kernel, it's right, but I expect an empty list when the matrix is inversible.
>
> The documentation of axiom announces it's the null vector in this case. So
> it isnot a bug... but I think it's a silly feature because it becomes
> impossible to get the dimension by the length function.
I think you are right. In fact, the user doc says it returns a basis, only the
internal doc says what you mentioned. The modification would be trivial, only,
it might break something...
> What is your advice ?
use nullity.
Martin