I have a set S of monomials in x1, x2, x3, x4 like
S=[x3x4,x2x3,x1x4,x4,x3,x1x2,x1,x2,1]. I want to rearrange S in
Lexicographic ordering like
S=[1,x1,x2,x1x2,x3,x2x3,x4,x1x4, x3x4].
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Le 29/06/2011 22:22, Michael Orlitzky a écrit :
This is probably just a case of don't do that, but I thought I'd check:
sage: c = [ var('c[0]') ]
sage: system = c[0]*x == 1
sage: solve(system, c[0])
boom
...
TypeError: unable to make sense of Maxima expression '[c[0]==1/x]' in
On 2011-06-30, Santanu Sarkar wrote:
I have a set S of monomials in x1, x2, x3, x4 like
S=[x3x4,x2x3,x1x4,x4,x3,x1x2,x1,x2,1]. I want to rearrange S in
Lexicographic ordering like
S=[1,x1,x2,x1x2,x3,x2x3,x4,x1x4, x3x4].
You can sort a list and specify the comparison function. See the help
On Wed, 29 Jun 2011 19:54:06 -0700 (PDT)
ObsessiveMathsFreak obsessivemathsfr...@gmail.com wrote:
This is pretty infuriating.
Unfortunately we haven't worked out the interaction between maxima's
assume() function and GiNaC/Pynac's knowledge of domains yet.
sage: forget()
sage:
Just to double-check, your md5sum is 3eadcc287c92c5391417b517e01edd9b?
It does work for me. Do you happen to have any umlaut in the directory path?
This can apparently cause this error, see
http://www.virtualbox.org/ticket/6588.
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I just realized that the file name is called Sage-4.7.ova but it should be
sage-4.7.ova (lower case!). Virtualbox is unfortunately very picky about the
file name. This is http://www.virtualbox.org/ticket/9033.
Harald: can you fix the file name on the download page?
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On Thu, Jun 30, 2011 at 13:48, Volker Braun vbraun.n...@gmail.com wrote:
I just realized that the file name is called Sage-4.7.ova but it should be
sage-4.7.ova (lower case!). Virtualbox is unfortunately very picky about the
file name. This is http://www.virtualbox.org/ticket/9033.
Harald: can
Kart-Dieter Crisman suggested at SD31 that the virtualbox machine file name
should be lower case to be consistent with the other Sage downloads. I then
implemented this in the newer version of the Sage virtual appliance. So this
is where the confusion comes from. But I agree of course that
ObsessiveMathsFreak wrote :
I have complex formulas involving several occurances of complex
exponentials. e.g. e^(2*I*theta), e^(3*I*theta)
I would like to find the real part of the expression (there are
several variables), but when I do so, the expression becomes unwieldy
with a lot of terms
