[sage-support] Re: latex binary and dvips binary
I think that there are more options how to install things in Cents. If yum is broken in your instalation, try some other method. Do you have root ssh acces? If so, I think that easiest method is to install texlive http://www.tug.org/texlive/ use wget ... to download, unpack and run install script (in text mode). Do not install all packages - select only the languages you are interested in and only the architecture which is suitable for your server. I have texlive in /opt/texlive and it is O.K. to move the complete tree to another computers, add binaries to path and everything works (provided the architecture is the same). So you may try to install on your computer with the same architecture, test everything and then move to the server. Robert -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
[sage-support] [ANN] OpenOpt 0.27 (optimization), FuncDesigner 0.17 (auto differentiation)
Hi all, I'm glad to inform you about release of OpenOpt 0.27 (numerical optimization framework), FuncDesigner 0.17 (CAS with automatic differentiation, convenient modelling of linear/nonlinear functions, can use convenient modelling for some OpenOpt optimization problems and systems of linear/nonlinear equations, possibly sparse or overdetermined), DerApproximator 0.17 (finite-differences derivatives approximation, get or check user-supplied). license: BSD See also changelog for details: http://openopt.org/Changelog Regards, D. -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
[sage-support] Re: OpenOpt 0.27 (optimization), FuncDesigner 0.17 (auto differentiation)
This is now http://trac.sagemath.org/sage_trac/ticket/7708 -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
[sage-support] Re: How to find out lisp symbol values using de_solve_Laplace in Sage
Hello,
I wrote in Sage:
maxima.clear('x'); maxima.clear('fnth')
maxima.de_solve_Laplace(diff(fnth(x),x,60) = fnth(x), [x,fnth],
[0,1,5,2,3,65,8,9,5,43,2,4,5,6,5,3,2,4,6,76,8,7,56,4,3,3,4,5,6,8,9,7,5,4,3,
4,5,6,7,9,7,5,4,4,3,4,5,6,7,7,6,5,4,3,5,6,6,5,5,4,4])
and got:
fnth(x)='ilt((185*?g454^15-198*?g454^14+264*?g454^13-88*?g454^12+533*?g4\
54^11+168*?g454^10+29*?g454^9+169*?g454^8+67*?g454^7-154*?g454^6-11*?g45\
...
e^-x/15
But when I then tried in Sage:
maxima(':LISP (g454)')
...
To *evaluate* code in a maxima session, you do:
maxima.eval(':LISP (g454)')
In sharp contrast, maxima('...') creates a single Maxima element.
William Stein
Associate Professor of Mathematics
University of Washingtonhttp://wstein.org
Sage actually just 'froze' when I tried one of following after
maxima.de_solve_laplace:
maxima(':lisp (eval g454)')
maxima(:lisp (eval 'g454))
maxima(':lisp (print g454)')
maxima.eval(':lisp (eval g454)')
maxima.eval(:lisp (eval 'g454))
maxima.eval(':lisp (print g454)')
so, Sage couldn't find out the value of g454. Having used Maxima, I
assume g454 is independent of the variables used in Laplace-transform,
but may depend on other variables.
I tried the same in Maxima, and found out, that g454 is not a bound
variable. This probably means, that it is just an independent variable
that was named during Maxima Laplace transform.
So, I will assume g454 to be a 'constant'.
The actual problem includes actually several simultaneous differential
equations including several functions. This can easily be done in
Maxima using desolve (which uses Laplace transform).
But, If I understood correctly, Sage can not call Maxima with several
simultaneous differential equations. To solve this case one should try
to collect information from several separate differential
equations in Sage (???). As I don't know how this is done, I probably
need to solve this in Maxima without Sage and then import the result
in symbolic form to Sage.
Thank you for your help.
Jari-Pekka Ikonen
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Re: [sage-support] Re: latex binary and dvips binary
you can install tex in your home directory. You would not need root permissions for this (but make sure you have enough disk space - I imagine such providers have disk quotas; a reasonable installation of tex can easily take 250Mb or so -- you get get away with much less, but this would require some work) 2009/12/16 Mikie thephantom6...@hotmail.com: BlueHost is my webhost. I have talked to support and they won't install latex binary or dvips binary. On Dec 15, 11:25 am, Jaap Spies j.sp...@hccnet.nl wrote: Mikie wrote: I tried yum install textlive and it gave me the following error--error accessing file for config file ///etc/yum.conf. I can't get to the Package Manager. It is on BlueHost. What is BlueHost? OK:http://www.bluehost.com/ Maybe you can ask support from this provider? Cheers, Jaap -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org -- Dmitrii Pasechnik - DISCLAIMER: Any text following this sentence does not constitute a part of this message, and was added automatically during transmission. -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
[sage-support] Re: latex binary and dvips binary
I have to do it in my home directory. I have the two files -- tet- latex 3.0-33.8.el5.ie386.rpm and tet-dvips 3.0-33.8.el5.ie386.rpm. This for Centos 5.3. Now what do I do. On Dec 16, 5:55 am, Dima Pasechnik dimp...@gmail.com wrote: you can install tex in your home directory. You would not need root permissions for this (but make sure you have enough disk space - I imagine such providers have disk quotas; a reasonable installation of tex can easily take 250Mb or so -- you get get away with much less, but this would require some work) 2009/12/16 Mikie thephantom6...@hotmail.com: BlueHost is my webhost. I have talked to support and they won't install latex binary or dvips binary. On Dec 15, 11:25 am, Jaap Spies j.sp...@hccnet.nl wrote: Mikie wrote: I tried yum install textlive and it gave me the following error--error accessing file for config file ///etc/yum.conf. I can't get to the Package Manager. It is on BlueHost. What is BlueHost? OK:http://www.bluehost.com/ Maybe you can ask support from this provider? Cheers, Jaap -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group athttp://groups.google.com/group/sage-support URL:http://www.sagemath.org -- Dmitrii Pasechnik - DISCLAIMER: Any text following this sentence does not constitute a part of this message, and was added automatically during transmission.- Hide quoted text - - Show quoted text - -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
[sage-support] Save to .sage file
Sorry, i'm new using Sage, i'm currently using the version 4.2.1. A question I have, How can i save a file or worksheet to an .sage extension file from the notebook?? I see that I only can save to .sws file. Another question is to use a .sage file, i need to define it with a function with the def command, or I can use the function command? Thanks for the attention. --Genaro Alfonso -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
[sage-support] Re: Save to .sage file
Dear Genaro,
Thanks for the interest in Sage!
On Dec 16, 10:38 am, Gennaro Alphonse gena...@gmail.com wrote:
Sorry, i'm new using Sage, i'm currently using the version 4.2.1. A
question I have, How can i save a file or worksheet to an .sage
extension file from the notebook?? I see that I only can save to .sws
file.
Hmm, unfortunately this is not implemented:
1) Because a .sage file is really just a bunch of Python commands plus
Sage pre-parsing, so it can't necessarily contain all the fun things
like the *output* of those commands and the text/TeX commenting one
can do in the notebook. So in some sense this isn't possible.
2) Because we don't (yet, but soon should) have an easy download
option for just the HTML/text of the worksheet. However, if you want
to get it, you can click Edit and then just select all the text! I
don't know if there is any way to get only the commands without
deleting other stuff, though.
I hope this helps, and please ask more if it doesn't!
Another question is to use a .sage file, i need to define it with a
function with the def command, or I can use the function command?
This question is less clear. The function command creates a symbolic
function
sage: f = function('f',x)
sage: f(3)
f(3)
(at least I think it will do this). If you want to make a callable
function the usual way to do it is:
sage: f(x)=x^2
but if you need something more complicated (that is, non-mathematical
but logical), you will need to create a Python function using def.
sage: def f(x):
if x5:
return x^3
else:
return nope, not what I wanted
I'm not sure if this answers your question, though.
- kcrisman
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[sage-support] Re: How to find out lisp symbol values using de_solve_Laplace in Sage
Jari-Pekka Ikonen wrote:
Hello,
I wrote in Sage:
maxima.clear('x'); maxima.clear('fnth')
maxima.de_solve_Laplace(diff(fnth(x),x,60) = fnth(x), [x,fnth], [0,1,5
2,3,65,8,9,5,43,2,4,5,6,5,3,2,4,6,76,8,7,56,4,3,3,4,5,6,8,9,7,5,4,3,4,5,6,7
9,7,5,4,4,3,4,5,6,7,7,6,5,4,3,5,6,6,5,5,4,4])
Sorry; I don't know that much about maxima's differential equation
solving abilities, but I just did exactly what you typed above, but did
not see anything about the g* variables you mention below. This is
probably because I don't know how to ask maxima for the result. How do
you do that? The return text I got was just a restatement of my command
(de_solve_Laplace(...))
--
| Sage Version 4.2.1, Release Date: 2009-11-14 |
| Type notebook() for the GUI, and license() for information.|
--
sage: maxima.clear('x'); maxima.clear('fnth')
sage: maxima.de_solve_Laplace(diff(fnth(x),x,60) = fnth(x), [x,fnth],
: [0,1,52,3,65,8,9,5,43,2,4,5,6,5,3,2,4,6,76,8,7,56,4,3,3,4,5,6,8,9,7,
: 5,4,3,4,5,6,79,7,5,4,4,3,4,5,6,7,7,6,5,4,3,5,6,6,5,5,4,4])
de_solve_Laplace('diff(fnth(x),x,60)=fnth(x),[x,fnth],[0,1,52,3,65,8,9,5,43,2,4,5,6,5,3,2,4,6,76,8,7,56,4,3,3,4,5,6,8,9,7,5,4,3,4,5,6,79,7,5,4,4,3,4,5,6,7,7,6,5,4,3,5,6,6,5,5,4,4])
sage:
and got:
fnth(x)='ilt((185*?g454^15-198*?g454^14+264*?g454^13-88*?g454^12+533*?g4\
54^11+168*?g454^10+29*?g454^9+169*?g454^8+67*?g454^7-154*?g454^6-11*?g45\
4^5+112*?g454^4+118*?g454^3+223*?g454^2+49*?g454+118)/(30*(?g454^16+?g45\
4^14-?g454^10-?g454^8-?g454^6+?g454^2+1)),?g454,x)+'ilt((40*?g454^7-137*\
?g454^6-194*?g454^5-607*?g454^4+124*?g454^3+678*?g454^2+296*?g454-312)/(\
60*(?g454^8+?g454^7-?g454^5-?g454^4-?g454^3+?g454+1)),?g454,x)+'ilt(-(20\
2*?g454^7+29*?g454^6-314*?g454^5-73*?g454^4-292*?g454^3+394*?g454^2-294*\
?g454-212)/(60*(?g454^8-?g454^7+?g454^5-?g454^4+?g454^3-?g454+1)),?g454,\
x)+'ilt(-(38*?g454^7-198*?g454^6-46*?g454^5+161*?g454^4-226*?g454^3-124*\
?g454^2+178*?g454+67)/(30*(?g454^8-?g454^6+?g454^4-?g454^2+1)),?g454,x)+\
'ilt(-(227*?g454^3+179*?g454^2+406*?g454+83)/(60*(?g454^4+?g454^3+?g454^\
2+?g454+1)),?g454,x)+'ilt(-(121*?g454^3-457*?g454^2+638*?g454-129)/(60*(\
?g454^4-?g454^3+?g454^2-?g454+1)),?g454,x)+'ilt(-(260*?g454^3+57*?g454^2\
-166*?g454+33)/(30*(?g454^4-?g454^2+1)),?g454,x)+%e^-(x/2)*(3^(3/2)*sin(\
sqrt(3)*x/2)/10+11*cos(sqrt(3)*x/2)/5)+%e^(x/2)*(-11*sin(sqrt(3)*x/2)/(1\
0*sqrt(3))-cos(sqrt(3)*x/2)/3)+19*sin(x)/10+23*cos(x)/30+87*%e^x/10+29*%\
e^-x/15
Thanks,
Jason
--
Jason Grout
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[sage-support] Re: How to find out lisp symbol values using de_solve_Laplace in Sage
On 16 pro, 11:54, jari-pekka.iko...@kolumbus.fi jari- pekka.iko...@kolumbus.fi wrote: But, If I understood correctly, Sage can not call Maxima with several simultaneous differential equations. To solve this case one should try to collect information from several separate differential equations in Sage (???). As I don't know how this is done, I probably need to solve this in Maxima without Sage and then import the result in symbolic form to Sage. I think that Sage has commands for solving systems of ODE. Do not follow the Sage constructions. Look at comands in desolvers.py ( run desolvers? in Sage) There is desolve_system command. Is this what you need? Robert -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
[sage-support] Re: How to find out lisp symbol values using de_solve_Laplace in Sage
Hi,
Ok, to solve, say, 253th order system of differential equations with
many functions one can simply write:
y=function('y',x)
y1=diff(y,x,1)
y2=diff(y1,x,2)
y3=diff(y2,x,3)
...
y253=diff(y252,x,253)
z=function('z',x)
z1=diff(z,x,1)
z2=diff(z1,x,2)
z3=diff(z2,x,3)
...
z253=diff(z252,x,253)
etc.
and then rewrite original differential equations for these new
functions. It should then become 1st order differential equation
system.
Eqn1 = (expression of above listed functions)_1 == 1
Eqn2 = (expression of above listed functions)_2 == 1
Eqn3 = (expression of above listed functions)_3 == 1
...
Eqn100 = (expression of above listed functions)_100 == 1
...
Eqn_n = (expression of above listed functions)_n == 1
Then desolve_system can be used to solve the functions
y,y1,y2,...,y253,z,z1,z2,...,z253 etc. If n(number of functions to be
solved), the solution will probably include some independent
constants.
The problem is then, whether original equations can be made 1st order
using this way.
Thank you for your time.
Jari-Pekka Ikonen
On Dec 15, 8:12 pm, ma...@mendelu.cz ma...@mendelu.cz wrote:
You may want to try Sage 4.3.rc1 and something like this
sage: y=function('y',x)
sage: desolve_laplace(diff(y,x,6) == y,y,ivar=x,ics=[0,1,2,5,6,7,3])
1/6*(sqrt(3)*sin(1/2*sqrt(3)*x) - 3*cos(1/2*sqrt(3)*x))*e^(-1/2*x) -
1/6*(3*sqrt(3)*sin(1/2*sqrt(3)*x) + 17*cos(1/2*sqrt(3)*x))*e^(1/2*x) +
1/3*e^(-x) + 4*e^x
Or install patchhttp://trac.sagemath.org/sage_trac/ticket/6479
Robert
On 15 pro, 12:19, Jari-Pekka Ikonen jari-pekka.iko...@kolumbus.fi
wrote:
Hello,
I wrote in Sage:
maxima.clear('x'); maxima.clear('fnth')
maxima.de_solve_Laplace(diff(fnth(x),x,60) = fnth(x), [x,fnth], [0,1,5
2,3,65,8,9,5,43,2,4,5,6,5,3,2,4,6,76,8,7,56,4,3,3,4,5,6,8,9,7,5,4,3,4,5,6,7
9,7,5,4,4,3,4,5,6,7,7,6,5,4,3,5,6,6,5,5,4,4])
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