On Mon, Mar 15, 2010 at 10:16 PM, Jason Grout
jason-s...@creativetrax.com wrote:
Whoever takes care of this original issue gets to claim a 3-digit ticket!
http://trac.sagemath.org/sage_trac/ticket/261
Patch up for review.
--Mike
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Hi Jason and everyone,Thank you very much for your reply.Now I have a function
or a set of data depending all the three coordinates x, y, z.In other words,
there is a corresponding value at every point in 3 dimensional space, which
maybevaries from -1 to 1. I want use color to represent the
Hi everybody,
i was wondering, which is the best method to plot a conditional function
within an interval. For example, a function whose values are:
0 if tt0
f(t) if tt0
where f(t) is a simple monoexponential decay that starts at t0. I tried
the following in Sage:
t = var('t')
def
Use Piecewise. Type Piecewise? For examples.
On Tuesday, March 16, 2010, Jose Guzman n...@neurohost.org wrote:
Hi everybody,
i was wondering, which is the best method to plot a conditional function
within an interval. For example, a function whose values are:
0 if tt0
f(t) if tt0
where
Dear group,
I have noticed a change in behaviour of mwrank when called from SAGE
4.3.3 to compute Selmer ranks. I am using Mac OSX 10.6.2, Power PC.
The SAGE folder is in the directory Applications. The command
u003429:~ julianaguirre$ /Applications/sage/sage -mwrank -v0 -s
gives
Program
When I try to make sage-4.3.3, I get:
There is no spkg-install script, no setup.py, and no configure
script,
so I do not know how to install /usr/share/sage-4.3.3/spkg/standard/
gd-2.0.35.p4.spkg.
make[1]: *** [installed/gd-2.0.35.p4] Error 1
make[1]: Leaving directory
On 03/16/2010 02:24 AM, wxu...@sohu.com wrote:
Hi Jason and everyone,
Thank you very much for your reply.
Now I have a function or a set of data depending all the three
coordinates x, y, z.
In other words, there is a corresponding value at every point in 3
dimensional space, which
Thank you very much! I will try this.regards,YC - 原文 - 发件人: Jason Grout
主 题: Re: 回复: [sage-support] Re: 3D plot in sage时 间: 2010年3月16日 03:36:36On
03/16/2010 02:24 AM, wxu...@sohu.com wrote:gt; Hi Jason and everyone,gt; gt;
Thank you very much for your reply.gt; gt; Now I have a
wxu...@sohu.com wrote:
Thank you very much!
I will try this.
You could try the experimental version found here:
http://sage.math.washington.edu/home/jsp/SPKGS/ETS/
Jaap
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Let me explain (as the author of mwrank).There was a bug in
mwrank, found by James Wiegandt and Edray Goins, which meant that in
some cases for curves with rational 2-torsion the computed upper bound
on the rank was too high. (Technical explanation: the second descent
homogensous spaces were
n Mon, Mar 15, 2010 at 10:30 AM, rvaug...@gmail.com rvaug...@gmail.com wrote:
Anybody running SAGE on Scientific Linux?
If so, how? What version SAGE, what version Scientific Linux?
I've tried several versions on SAGE on SciLinux 4.8 5.4,
and in no case did the 'make' succeed.
What did you
On Mar 16, 3:06 pm, rvaug...@gmail.com rvaug...@gmail.com wrote:
When I try to make sage-4.3.3, I get:
There is no spkg-install script, no setup.py, and no configure
script,
so I do not know how to install /usr/share/sage-4.3.3/spkg/standard/
gd-2.0.35.p4.spkg.
make[1]: ***
On Mar 16, 2:32 am, Mike Hansen mhan...@gmail.com wrote:
On Mon, Mar 15, 2010 at 10:16 PM, Jason Grout
jason-s...@creativetrax.com wrote:
Whoever takes care of this original issue gets to claim a 3-digit ticket!
http://trac.sagemath.org/sage_trac/ticket/261
Patch up for review.
--Mike
On Tue, Mar 16, 2010 at 12:38 PM, Alec Mihailovs
alec.mihail...@gmail.com wrote:
Will it work as matrix(5,f) as well, or only as matrix(5,5,f) ?
It now works with both.
--Mike
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Thanks a lot David, this is what I needed.
Just if somebody else might need it, i will resolve the problem:
# declare t and tau as symbolic variables
var('t')
var('tau')
# monoexponential equation
g(t) = e**(-t/tau)
# 2-piece result (one from 0 to t0, the second from t0 to 1000
t0 = 0.2 #
On Mar 16, 3:57 pm, Mike Hansen mhan...@gmail.com wrote:
On Tue, Mar 16, 2010 at 12:38 PM, Alec Mihailovs
alec.mihail...@gmail.com wrote:
Will it work as matrix(5,f) as well, or only as matrix(5,5,f) ?
It now works with both.
--Mike
That's great!
What about vector(3,f), f.vector(3), and
Hello,
I have a term t that I simplify with t.simplify_trig(). Parts of the
result look something like this:
65*sin(0.500*pi)*sin(x2)*cos(x3)*sin(x5)+...
My limited math understanding tells me that sin(0.5*pi) is zero,
therefore the term shouldn't be there. Is there a way to let
stefan.o...@gmail.com ha scritto:
Hello,
I have a term t that I simplify with t.simplify_trig(). Parts of the
result look something like this:
65*sin(0.500*pi)*sin(x2)*cos(x3)*sin(x5)+...
My limited math understanding tells me that sin(0.5*pi) is zero,
sin(pi/2)=0, that's
To get the value of 'x' from solve you can use the option
solultion_dict = true as follows:
sage: S = solve(derivative(f,x)==0,x, solution_dict=true)
sage: S[0][x]
tau0*log(tau1/tau0 + 1)
sage: S[0][x].subs(tau0=0.5, tau1=5.0)
1.19894763639919
Also, using the 'N' function will evaluate numerical
Thank you for yor clear explanation.
Julián Aguirre
On 16 mar, 18:23, John Cremona john.crem...@gmail.com wrote:
Let me explain (as the author of mwrank). There was a bug in
mwrank, found by James Wiegandt and Edray Goins, which meant that in
some cases for curves with rational 2-torsion
I'm using @interact to make a demo for my calculus students involving
area minimization:
@interact
def _(s=slider(-10,-0.1,0.1,default=-2.5,label='slope')):
html('Try to minimize the area of the triangle whose hypotenuse
passes through (2,3)')
G=line([(0,-2*s+3), (-3/s+2,0)])
On Tue, Mar 16, 2010 at 1:06 PM, Alec Mihailovs
alec.mihail...@gmail.com wrote:
What about vector(3,f), f.vector(3), and f.matrix(3,4) or
f.matrix(5) ?
I didn't do anything about vector() -- I could probably get to it later.
There's no good way to make a syntax like f.matrix() or f.vector()
By the way, vector doesn't work with integer numpy arrays,
from numpy import array
vector(array([1,2]))
Traceback (most recent call last):
File stdin, line 1, in module
File _sage_input_60.py, line 5, in module
vector(array([_sage_const_1 ,_sage_const_2 ]))
File , line 1, in module
dear Stefan
first of all sin(pi/2) = 1.0
to understand the problem arises in your computation u should
read about floating point arithmetic and about how numbers are stored in
computers.
check this very good article.
http://docs.sun.com/source/806-3568/ncg_goldberg.html
i hope this may clarify
Hi, you have something like syntax highlight in sws2tex, see
http://user.mendelu.cz/marik/sage/polynomials.pdf or
http://user.mendelu.cz/marik/sage/vrstevnice.pdf
sws2tex: http://bitbucket.org/whuss/sws2tex/
Robert Marik
On 16 bře, 22:05, dmitrey dmitrey.kros...@scipy.org wrote:
hi all,
is it
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