- cocalc.com does not need instalation
- https://github.com/sagemathinc/cocalc-docker needs instalation
I don't know if this anwers the question.
Pedro
sábado, 29 de Junho de 2019 às 18:07:10 UTC+1, Samanta escreveu:
>
> What is the procedure of installing Sagemath in a server so that many
t())
else:
return "{0} + {1}I".format(x.real_part(), abs(x.imag_part()))
terça-feira, 11 de Abril de 2017 às 20:25:46 UTC+1, Jeroen Demeyer escreveu:
>
> On 2017-04-11 18:25, Pedro Cruz wrote:
> > Hello,
> >
> > sage is printing b*I + a and we want
Hello,
sage is printing b*I + a and we want to see a + b * I
What could we do ?
We can create a function to print it a + b*I but is any other standard way?
Thank you,
Pedro
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The latex function
print latex(g)
is generating lines like
\Vertex[style={minimum
size=1.0cm,draw=cv0,fill=cfv0,text=clv0,shape=rectangle},LabelOut=false,L=\hbox{$1$},x=1.5944cm,y=3.3989cm]{v0}
and it seems that \Vertex[style={ }] is not working. I've checked tikz-graph
manuel and
The following code (sage 6.9):
sage: g = graphs.PetersenGraph()
sage: g.set_latex_options(vertex_color='green')
sage: view(g)
produces a black-and-white graph.
In SMC produces a graph with blue vertices.
What can I do?
Thank you,
Pedro
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The following code (sage 6.9):
sage: g = graphs.PetersenGraph()
sage: g.set_latex_options(vertex_color='green')
sage: view(g)
produces a black-and-white graph.
In SMC produces a graph with blue vertices.
What can I do?
Thank you,
Pedro
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In one variable
sage: x.subs(x==10)
works ok.
How to do a pair substitution ?
sage: var(x,y)
(x, y)
sage: (x,y).subs([x==10,y==20])
---
AttributeError: 'tuple' object has no attribute 'subs'
With Sagemath:
┌┐
│ Sage Version 5.12, Release Date: 2013-10-07│
└┘
sage: var(d,e,f)
(d, e, f)
sage: A = matrix(SR, [ [1,2,3], [3,2,1],
Hello,
using Sage 6.2 there is this behaviour:
sage: SR(2).power(3,hold=True)
2^3
sage: 3*SR(2).power(3,hold=True)
3*8
or
sage: SR(2*x).power(3,hold=True)
(2*x)^3
sage: 4 * SR(2*x).power(3,hold=True)
4*(8*x^3)
which I don't know if it is expected.
Because we want some expressions no to be
An unexpected behaviour in latex() command (both 5.12 and 6.4 Sage
versions):
sage: latex( 120/factorial(5,hold=True) )
\frac{120}{120}
sage: latex( factorial(5,hold=True) )
5!
We need to hold the expression for proper latex transcription.
Is there any other way to avoid latex() to compute
Is possible that after user action on interaction control X the function
that updates
the interact screen could also update the X control possible values ?
Thank you,
Pedro
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To the graph package maintainers,
Using
G.relabel( [ i+1 for i in range(G.order()) ], inplace=True )
and repeat the same command once more causes the error below.
But using
G.relabel(lambda i: i+1, inplace=True)
twice does not produce the error.
(at least this it's not intuitive for me)
Hello,
what's the easiest way to draw bar charts (two columns for each category)
since they are not yet implemented in Sage?
Is it possible to hide only Xaxis on a plot?
Thank you,
Pedro
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HI,
I would like to solve the arrows on the end of axes in a plot but for
Sage 5.2.
I've read this, targetting Sge 6.1:
http://trac.sagemath.org/ticket/10740
but I would like some more help to try to do it in Sage 5.2.
Any help ?
Thanks,
Pedro
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(I've did a little search on this but couldn't found the solution.)
How to use SR.wild(0) when abs is present in an expression ?
Thanks.
Pedro
EXAMPLE 1 (with abs)
t=var('t')
w0 = SR.wild(0)
e1 = abs(cos(t))^2; print e1
print e1.subs( abs(w0)^2 == w0 )
abs(cos(t))^2
abs(cos(t))#abs
function as an answer. Is this the proper way to do it
in Sage ?
Could it be better and simple?
Thank you,
Pedro Cruz
[1] http://www.sagemath.org/doc/reference/functions/sage/functions/log.html
[2] http://www.sagemath.org/doc/reference/coercion/
About the subject: in some moment, in the portuguese
Dear Sage supporters,
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How can I develop the function below ? Where should I start to read?
HSLOG = High School Log.
Treat forms like `\log_b(a^p)` in a special manner.
Standard sage log
18:05:11 UTC+1, Dima Pasechnik escreveu:
On 2013-08-19, Pedro Cruz pedrocr...@gmail.com javascript: wrote:
--=_Part_528_16021328.1376911141827
Content-Type: text/plain; charset=ISO-8859-1
I'm doing what i've been doing from long ago:
1. wget sage.lzma
2 tar --lzma -xvf
I'm doing what i've been doing from long ago:
1. wget sage.lzma
2 tar --lzma -xvf sage.lzma
3. change directory inside sage/sage script
4. enter sage directory
5. run ./sage
It does stop with this error :
sageserver@faisca:~/sage-5.11$ ./sage
Dear Sage Cell users and authors,
We are planning to embed
http://sagecell.sagemath.org/
at our local page P.
What is the best way to incorporate a *simple* sage/python module for all
calculations using our local sage page P ?
Thank you,
Pedro
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Just to note that the Chrome Web Store for Sage is not working
because demo.sagenb.org is down.
Pedro
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Consider this sequence:
g = Graphics()
g += ... primitives..
g.save(tempfile.svg)
Is there any command like:
one_str = g.savestring(svg)
that avoids opening and reading tempfile.svg ?
Thank you.
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To
Possible hint:
I did not check Latex().eval() code but probably it uses temporary random
filenames to store the object to the file and then to compile it and that's
why there is no fixed order at output (maybe filename alphabetic order).
Pedro
Quinta-feira, 5 de Abril de 2012 17:32:59
I don't know if this below is a standard way but it works to develop stand
alone packages:
At sage package directory, for example,
/opt/sage-some-version/local/lib/python2.6/site-packages/
execute
ln -s /home/user1/newpackage/
where newpackage is a directory with all files
Doing:
sage: import numpy
on a fresh sage instalation:
Platform (CPU) and Operating System: ubuntu 32 bit LTS 10.04
Exact version of Sage: 'Sage Version 4.8, Release Date: 2012-01-20' (32
bit)
causes error:
/home/jpedro/sage/local/lib/python2.6/site-packages/numpy/lib/polynomial.py
in
Good morning,
the command
integrate( abs(x^2-1), x, -2,2)
does not do the job automatically.
I have seen on this discussion group another, at least, similar
message.
Is there an organized list of functions that are yet implemented for
integration? How can one cooperate without being a sage
I have followed instructions on
http://wiki.sagemath.org/SageServer
and it seems that everything is ok: creating new user, doing cell
computations.
For cython I'm getting
IOError: [Errno 13] Permission denied
in a cell, of notebook sage 4.6.1, with:
-
%cython
def
I'm going to add
input += '_interact_.SAGE_CELL_BZ2TEXT=%r\n' %
bz2.compress(C.input_text())
to
~/sage/devel/sagenb/sagenb/notebook/worksheet.py
in function
start_next_comp()
It uses bz2 because it's already on worksheet.py and to avoid
string_inside_string problems.
This delays
I'm writting an application were a person develops an algorithm using
the sage notebook (on his computer, for example).
That algorithm will be developed inside a notebook cell.
Then I would like to store that cell contents in a common database
automatically avoiding cut/paste to another place.
My suggestion is:
x=var('x')
rf = RealField(prec=10) #10 bits
g(x) = -rf(-0.1) * x^4
print g
print g(1.2345)
but before try:
preparse('g(x) = -0.1 * x^4')
It seems that Sage always prints the full and correct representation
of the RealNumber and not just an approximation. In this matter Sage
This command
plot(k%1,k,0,5)
produce an error.
That % python operator does differently from simple modulo:
1.9%1
-0.1
1.5%1
-0.5
2.5 %1
0.5
It was strange that with k/1 plot works fine but not with k%1.
Pedro
On 9 Out, 15:19, Don Krug dandd.k...@gmail.com wrote:
On Oct 4, 7:03 pm,
/2), i, 0, 10) #SUMATION
but if I do
sum((i^2 + 0.0246*i + 1.00015129)^(-3/2), i, 0, 10)
1.49935960541
How can I turn the #SUMATION to a number when I call function h?
Thanks
Pedro Cruz
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+ 0.0246*i + 1.00015129)^(-3/2), i, 0, 10) #SUMATION
1.499...
where sage knows it's all numbers.
In the screen they are exactly the same. Internally they are
different.
Pedro
On Oct 5, 3:24 pm, Pedro Cruz pedrocruzave...@gmail.com wrote:
Why in this code:
r,a,n,i,noo=var('r,a,n,i,noo
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