On Jul 13, 2:16 pm, TianWei wrote:
> > Hi, if I have an existing polyhedron p and want to add a vertex v
> > (that was not in p) to p, is it possible to modify it (e.g., adding
> > new vertices v to p) instead of creating a new polyhedron p' that
> > contains all the previous vertices of p and
> Hi, if I have an existing polyhedron p and want to add a vertex v
> (that was not in p) to p, is it possible to modify it (e.g., adding
> new vertices v to p) instead of creating a new polyhedron p' that
> contains all the previous vertices of p and v ?
It might be worth pointing out the doc
On Tue, Jul 13, 2010 at 7:24 PM, Dr. David Kirkby
wrote:
> On 07/13/10 08:05 AM, William Stein wrote:
>>
>> On Tue, Jul 13, 2010 at 7:46 AM, Robert Bradshaw
>> wrote:
>>>
>>> On Mon, Jul 5, 2010 at 4:39 AM, Dr. David Kirkby
>>> wrote:
On 07/ 5/10 06:18 AM, William Stein wrote:
>
On Jul 13, 4:47 pm, Jason Grout wrote:
> On 7/13/10 4:46 AM, David Sanders wrote:
>
>
>
> > Hi,
>
> > I need to superimpose several region_plot's. These have regions
> > colored in different colors which may or may not overlap. However, if
> > I do something like
>
> > var('p q')
> > plot1 = reg
On 07/13/10 08:05 AM, William Stein wrote:
On Tue, Jul 13, 2010 at 7:46 AM, Robert Bradshaw
wrote:
On Mon, Jul 5, 2010 at 4:39 AM, Dr. David Kirkby
wrote:
On 07/ 5/10 06:18 AM, William Stein wrote:
Great idea - you could add an algorithm="axiom" option to sage's
integrate command.
Perso
Hi, if I have an existing polyhedron p and want to add a vertex v
(that was not in p) to p, is it possible to modify it (e.g., adding
new vertices v to p) instead of creating a new polyhedron p' that
contains all the previous vertices of p and v ?
Thanks,
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cvvcv
2010/7/13 8fjm39j
> Following up with another data point:
>
> Sage 4.3.4 under some version of Redhat Linux on an intel computer
> with 64GB RAM.
>
> The case that failed on the 4GB macbookpro succeeds here: minimize()
> returns a value.
>
> A larger case fails in the same manner, minimize
On 13 Jul., 17:32, 8fjm39j wrote:
> One minor question: in your definition of the gradient function,
> sage: gradfun = lambda x:np.array(map(lambda f:f(*x),
> eq.gradient()))
> should that be 'eq.gradient()' or should it be 'req.gradient()' ?
> (recall that req = eq.change_ring(RDF))
I only
Thanks for your suggestion. I've now running a worksheet using your
method to minimize a large polynomial. So far, minimize() has not yet
returned.
One minor question: in your definition of the gradient function,
sage: gradfun = lambda x:np.array(map(lambda f:f(*x),
eq.gradient()))
should
On 7/13/10 4:46 AM, David Sanders wrote:
Hi,
I need to superimpose several region_plot's. These have regions
colored in different colors which may or may not overlap. However, if
I do something like
var('p q')
plot1 = region_plot([p+q<1, p+q>-1], (p,-2,2), (q,-2,2), incol='red')
plot2 = region_
Hi Tim
Thanks for the prompt reply! I have tried and, of course, confirmed
your suggestions.
However, I am a little concerned about the best way to streamline my
experience with Sage. In fact, I find the embedding of the figures
(all kinds of plots) and even Latex in the notebook quite amazing an
Following up with another data point:
Sage 4.3.4 under some version of Redhat Linux on an intel computer
with 64GB RAM.
The case that failed on the 4GB macbookpro succeeds here: minimize()
returns a value.
A larger case fails in the same manner, minimize() returning without
a value:
S is a
On Jul 13, 3:07 pm, 8fjm39j wrote:
> Any help would be much appreciated.
I'm not sure if problems of this size work. Also, you should add the
gradient to the minimize method. Here is a snippet that might help
you. You do not need the SR as far as i can see.
sage: RQ = PolynomialRing(QQ, 30, '
I am trying to minimize numerically (over the reals) a polynomial S
with rational coefficients.
The function sage.numerical.optimize.minimize() returns without
returning a value.
Here's the relevant fragment of Sage code (executed using the menu
item 'evaluate all')
= BEGIN CODE FRAGMENT =
Hi,
I need to superimpose several region_plot's. These have regions
colored in different colors which may or may not overlap. However, if
I do something like
var('p q')
plot1 = region_plot([p+q<1, p+q>-1], (p,-2,2), (q,-2,2), incol='red')
plot2 = region_plot([p-q<1, p-q>-1], (p,-2,2), (q,-2,2), i
Hi,
You can use:
{{{
%sh
cd ~/foobar
ls
echo "Blah"
}}},
but any directory changes are limited to the cell only (due to
architectural reasons). Otherwise, os.listdir('.') and and
os.chdir('~/foo') are your best choices.
On Tue, Jul 13, 2010 at 5:53 PM, orca wrote:
> Hi there,
>
> I'm a newbie
Hi there,
I'm a newbie Sage user and my question is related to using its
notebook interface in a more convenient ipython-like way in my single
machine (be it a laptop or desktop), if possible. What I mean,
explicitly, for example, is being able to type:
cd ~orca/research
and being able to chang
On Mon, 12 Jul 2010 08:46:16 -0700 (PDT)
David Sanders wrote:
> > > I also note that after reading the documentation, I am still left
> > > without an answer to my original question, which is how to do
> > > pattern matching in Sage (or if it's even possible) for something
> > > of the form
> > >
On Tue, Jul 13, 2010 at 7:46 AM, Robert Bradshaw
wrote:
> On Mon, Jul 5, 2010 at 4:39 AM, Dr. David Kirkby
> wrote:
>> On 07/ 5/10 06:18 AM, William Stein wrote:
>>>
>>> Great idea - you could add an algorithm="axiom" option to sage's
>>> integrate command.
>>
>> Personally, and I am going to dar
On Tue, Jul 13, 2010 at 8:11 AM, Robert Bradshaw
wrote:
> On Sun, Jul 4, 2010 at 9:47 AM, Greg Kuperberg
> wrote:
>> On Jul 3, 8:33 am, William Stein wrote:
>>> Sage can't switch to Python 3 until every single Python package in
>>> Sage is ported to Python 3.
>>> This is far from done. It's po
Found the problem was with my system's tar command. After specifying
tar="internal" (meaning that it uses R's builtin tar) everything
worked fine.
Thanks for your consideration though.
On Jul 12, 11:14 pm, kcrisman wrote:
> On Jul 12, 10:57 pm, rickhg12hs wrote:
>
> > I've tried to use R's unt
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