Does anybody know why there are two methods to invert matrices?
One of them is called m.inverse() and the other is m.invert().
invert() seems to be only defined for dense matrices with rational
entries, and inverse() seems to work for both sparse and dense
matrices over any field.
Is there a
. do not work.
I have tried
A.AI
A . AI
and
maxima(A.AI)
please help me
thx
On Mar 9, 5:58 am, Robert Dodier robert.dod...@gmail.com wrote:
alex wrote:
How can i compute the matrix multiplication (product) of two symbolic
matrices in sage ?
I have tried:
A = maxima(matrix ([a, b], [c,
Dear Alex,
On Mar 9, 12:21 pm, alex alessandro.bernardini.1...@gmail.com wrote:
. do not work.
I have tried
A.AI
A . AI
This does not work because A and AI live in Sage, and in Sage the dot
does not mean multiplication.
A.AI means look for an attribute named AI of the object A. Since A
has
On Sun, Mar 8, 2009 at 1:43 PM, alex
alessandro.bernardini.1...@gmail.com wrote:
How can i compute the matrix multiplication (product) of two symbolic
matrices in sage ?
I have tried:
A = maxima(matrix ([a, b], [c, d]))
AI= A.invert()
and
A * AI
gives
Just a word of caution with respect to simplify_full().
If your function involves floating point numbers, simplify_full() can
give an erroneous result (see bug #2604950 in Maxima or
The terminal opened as follows:
Last login: Sun Mar 8 16:23:08 on console
/Applications/sage/sage ; exit;
You have mail.
Laptop-3:~ test$ /Applications/sage/sage ; exit;
--
| Sage Version 3.2.3, Release Date: 2009-01-05
On Sun, Mar 8, 2009 at 7:35 PM, Omar omar.anto...@gmail.com wrote:
Does anybody know why there are two methods to invert matrices?
One of them is called m.inverse() and the other is m.invert().
invert() seems to be only defined for dense matrices with rational
entries, and inverse() seems
Thanks for your help, everything works great now.
How do I write matrices inside [ ] instead of ( ) ?
On Mar 9, 7:38 am, kcrisman kcris...@gmail.com wrote:
The terminal opened as follows:
Last login: Sun Mar 8 16:23:08 on console
/Applications/sage/sage ; exit;
You have mail.
On Mar 9, 2009, at 4:44 AM, David Joyner wrote:
On Sun, Mar 8, 2009 at 1:43 PM, alex
alessandro.bernardini.1...@gmail.com wrote:
How can i compute the matrix multiplication (product) of two symbolic
matrices in sage ?
I have tried:
A = maxima(matrix ([a, b], [c, d]))
AI= A.invert()
On Mar 9, 9:35 am, William Stein wst...@gmail.com wrote:
[snip]
That sounds likely. The somebody was probably me. I hope somebody
opens a track
ticket to deprecate, then remove (in some number of months) invert.
http://trac.sagemath.org/sage_trac/ticket/5460
John
Maurizio maurizio.gran...@gmail.com writes:
What is the reason to have such a bugged function?
I wouldn't consider
sage: var('omgo zr ys cz')
(omgo, zr, ys, cz)
sage: omgo = (sqrt(-zr^2 + 2*ys*zr + (2*cz - zr)^2 - 2*ys*(2*cz - zr))
+ 2*zr- 2*cz)/(2*zr - 2*cz)
sage:
I extracted atom binary on my eeepc 900A. The following error message
occurs
Error setting environment variables by running /home/net/documents/
python programs/sage-3.2.3-ubuntu-Intel_AtomN270-Netbook-i686-Linux/
local/bin/sage-env; possibly contact sage-devel (see
On Mar 9, 1:03 pm, nsauer nsa...@math.ucalgary.ca wrote:
Thanks for your help, everything works great now.
Great!
How do I write matrices inside [ ] instead of ( ) ?
I'm not sure - can you be more specific about what command you are
trying, what output you are getting, and what output you
Hi guys,
After I found a bug in sage 3.2.3 ( see Division error in Sage 3.3 but
not in Sage 3.1.1 posted march 7, 2009), I decided used sage 3.1.1.
Now I have a problem with sage 3.1.1
1. the program generate the object H
2. save H
3. G =load(H)
I assume G == H, but it doesn't happens. See the
On Mon, Mar 9, 2009 at 6:37 PM, Alex Lara lrodr...@gmail.com wrote:
Some idea of how to fix this?
I don't have a copy of Sage 3.1.1 handy right now since it is so old.
In Sage 3.4.rc0, I run your code and get H and G to be the same.
--Mike
--~--~-~--~~~---~--~~
On Mar 9, 2009, at 6:42 PM, Mike Hansen wrote:
On Mon, Mar 9, 2009 at 6:37 PM, Alex Lara lrodr...@gmail.com wrote:
Some idea of how to fix this?
I don't have a copy of Sage 3.1.1 handy right now since it is so old.
In Sage 3.4.rc0, I run your code and get H and G to be the same.
FWIW,
On Mon, Mar 9, 2009 at 7:24 PM, Justin Walker jus...@mac.com wrote:
FWIW, the problem shows in Sage 3.3 (the -1 and -2 entries are
interchanged; the rest show in the same order).
There is no guarantee on the order of the elements when you iterate
through a dictionary.
--Mike
D'oh!
On Mar 9, 2009, at 7:30 PM, Mike Hansen wrote:
On Mon, Mar 9, 2009 at 7:24 PM, Justin Walker jus...@mac.com wrote:
FWIW, the problem shows in Sage 3.3 (the -1 and -2 entries are
interchanged; the rest show in the same order).
There is no guarantee on the order of the elements when
On Mar 9, 6:32 pm, gsage sambe...@gmail.com wrote:
I extracted atom binary on my eeepc 900A. The following error message
occurs
Error setting environment variables by running /home/net/documents/
python programs/sage-3.2.3-ubuntu-Intel_AtomN270-Netbook-i686-Linux/
local/bin/sage-env;
thanks Tim
On Mar 9, 2:11 pm, Timothy Clemans timothy.clem...@gmail.com wrote:
Hi,
You can customize the notebook css by creating your own css file at
$HOME/.sage/notebook.css
The main css code is
athttp://hg.sagemath.org/sage-main/file/b0aa7ef45b3c/sage/server/notebo...
On Sun, Mar 8,
Hi Alex,
After I found a bug in sage 3.2.3 ( see Division error in Sage 3.3 but
not in Sage 3.1.1 posted march 7, 2009), I decided used sage 3.1.1.
Now I have a problem with sage 3.1.1
1. the program generate the object H
2. save H
3. G =load(H)
So this is a pretty funky bug -- however,
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