Ben a écrit :
I'm trying to take a rational map on P^1 (i.e. f(x,y) = [deg 2 poly,
deg 2 poly] and conjugate, but I can't seem to get sage to cooperate.
I would like to take a generic degree 2 map on P^1, and conjugate by
an element of PGL_2. For example, I can do
R.X,Y =
On Thu, Jul 22, 2010 at 4:03 AM, Nathann Cohen nathann.co...@gmail.com wrote:
Hello everybody !!!
I began to use Sage's attach and load functions not so long ago, and I
stopped very soon to resume using the good old execfile. My problem is
that when a script loaded with attach or load fails
Yes. Now ZZ[0].coefficients() works.
Thanks.
On Jul 22, 2:22 am, Marc Mezzarobba m...@mezzarobba.net wrote:
Ben a crit :
I'm trying to take a rational map on P^1 (i.e. f(x,y) = [deg 2 poly,
deg 2 poly] and conjugate, but I can't seem to get sage to cooperate.
I would like to take a
I have written a function to compute the Macaulay resultant of 3
degree 2 homogenous polynomials via the determinant of a matrix
depending on the coefficients. It seems to take a very long time to
compute the determinant, I didn't actually get it to finish (which is
not true in Pari/gp). I was
I'd like to construct a sparse vector (say a unit vector in 100
dimensional space) by saying
a = vector(GF(2),100,dict([(22,1)]),sparse=True)
However, this gives the error message below.
This seems like a bug to me.
Victor
ValueError: incompatible degrees in vector constructor
Traceback
I am trying to solve this simple linear programming prob using
MixedIntegerLinearProgram and it gives an AttributeError:
LinearFunction instance has no attribute '__float__' exception
sage: p =
MixedIntegerLinearProgram(maximization=True)
sage: x =
p.new_variable()
sage: p.add_constraint(x[0] +
I had thought that repr(A) (where A is some object) was supposed to be
a string with property that eval(repr(A)) == A.
However, if A is a dense matrix (whose size is above some threshold)
what I get instead is
something like:
'212 x 212 dense matrix over Finite Field of size 2'
I could
How to use jsmath and what need this button in the sage-notebook?
Please show a screenshot with the correct work jsmath.
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Can I do so that would be a formula in the cells sage-notebook as
editing replaced their latex presentation? That would be much nicer to
work with them!
Thank you.
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latex-render (image) presentation.
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URL:
is there a trick to convert RealLiteral numbers to strings without
the trailing zeros? e.g., 2. and 0.050 become 2
and 0.05 respectively --
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sage: str(0.53253453425).rstrip(.0)
'0.53253453425'
sage: str(2).rstrip(.0)
'2'
On 22 July 2010 22:26, tvn nguyenthanh...@gmail.com wrote:
is there a trick to convert RealLiteral numbers to strings without
the trailing zeros? e.g., 2. and 0.050 become 2
and 0.05
On 07/22/2010 04:41 PM, Martin Albrecht wrote:
On 22 July 2010 22:26, tvn nguyenthanh...@gmail.com wrote:
is there a trick to convert RealLiteral numbers to strings without
the trailing zeros? e.g., 2. and 0.050 become 2
and 0.05 respectively --
sage:
stupid of me -- totally didn't pay attention to python string
function ... thanks all
On Jul 22, 4:06 pm, Mitesh Patel qed...@gmail.com wrote:
On 07/22/2010 04:41 PM, Martin Albrecht wrote:
On 22 July 2010 22:26, tvn nguyenthanh...@gmail.com wrote:
is there a trick to convert RealLiteral
Hello,
I am trying to solve a small system of ODEs, following the tutorial on
the SAGE homepage; however, I only receive an error message. What am I
doing wrong?
Here is my code:
t = var ('t')
S_0 = 1.5
X_0 = 0.05
Y_XS = 0.5
K_S = 0.007
mu_max = 0.8
X = function ('X', t)
Forgot to mention: This is SAGE 4.5.1.
Richard
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Sorry for spamming,
but I figured my initial code didn't make sense in the way mu was
computed; so I changed it to the following. The error message stays
the same, though.
t = var ('t')
S_0 = 1.5
X_0 = 0.05
Y_XS = 0.5
K_S = 0.007
mu_max = 0.8
X = function ('X', t)
S =
Sometimes I've used A.rows(), I think, but you'll note that we also
get
sage: A = matrix(55)
sage: A
55 x 55 dense matrix over Integer Ring (type 'print A.str()' to see
all of the entries)
I'll not include the output of A.str() :)
I don't know if this is what you want, though of course one
Hello !!
I am trying to solve this simple linear programming prob using
MixedIntegerLinearProgram and it gives an AttributeError:
LinearFunction instance has no attribute '__float__' exception
This is mainly my fault, and the reason is that min/max arguments do
not like to get something
Also: It's quite possible that someone in the worldwide Sage
user-developer community is fluent (or can reply much better than I
could!) in your language(s) of fluency. But I'm not sure about official
sage-* group policy. Are there are dedicated non-English language
groups (mailing lists
This is now patch #9579, which is waiting for review :-)
Nathann
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On Jul 22, 8:25 pm, Richard rich...@r-selected.de wrote:
Sorry for spamming,
but I figured my initial code didn't make sense in the way mu was
computed; so I changed it to the following. The error message stays
the same, though.
t = var ('t')
S_0 = 1.5
X_0 = 0.05
On 7/22/10 1:21 PM, VictorMiller wrote:
I had thought that repr(A) (where A is some object) was supposed to be
a string with property that eval(repr(A)) == A.
However, if A is a dense matrix (whose size is above some threshold)
what I get instead is
something like:
'212 x 212 dense matrix over
On 7/22/10 2:26 PM, tvn wrote:
is there a trick to convert RealLiteral numbers to strings without
the trailing zeros? e.g., 2. and 0.050 become 2
and 0.05 respectively --
For now, you can use the skip_zeroes argument to str:
sage: a=2.
sage: a
On 7/22/10 2:26 PM, tvn wrote:
is there a trick to convert RealLiteral numbers to strings without
the trailing zeros? e.g., 2. and 0.050 become 2
and 0.05 respectively --
Also, you could just convert to python floats, which by default don't
print trailing zeros
Hi
I am trying to use something like the filter() command, for this
purpose mentioned below:
I am iterating through all partitions p of a fixed length k ( let's
say using Partitions (size, length=k) ) and I have written a function
which return true if the partition p has atleast one part
On Thu, 22 Jul 2010 at 10:04PM -0700, vasu wrote:
I am trying to use something like the filter() command, for this
purpose mentioned below:
I am iterating through all partitions p of a fixed length k ( let's
say using Partitions (size, length=k) ) and I have written a function
which return
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