[sage-support] Re: summation

2010-09-15 Thread Simon King
Hi sps! On Sep 14, 4:55 pm, kcrisman kcris...@gmail.com wrote: On Sep 14, 11:40 am, sps debernasave...@libero.it wrote: So you say, I have to digit this: maxima_console() Not exactly. I would say that our reply to your question had two layers: 1) Both kcrisman and I explained how it

[sage-support] ANN: OpenOpt 0.31, FuncDesigner 0.21, DerApproximator 0.21

2010-09-15 Thread dmitrey
Hi all, I'm glad to inform you about new releases of our completely free (BSD license) Python-written software: * OpenOpt 0.31 (numerical optimization) * FuncDesigner 0.21 (automatic differentiation, modelling, interpolation, integration) * DerApproximator 0.21 (finite-differences derivatives

Re: [sage-support] Operations for analysis and design of feedback control systems

2010-09-15 Thread Minh Nguyen
Hi pepe, On Mon, Sep 13, 2010 at 6:56 PM, pepe balazovic.pe...@gmail.com wrote: Is there support for operations for analysis and design of feedback control systems, kind of MATLAB Control Systems Toolbox? I'm not aware of any such thing currently in Sage. Up to now I found only

[sage-support] Re: continued_fraction returns nothing

2010-09-15 Thread Håkan Granath
On Sep 15, 3:44 am, Robert Bradshaw rober...@math.washington.edu wrote: On Tue, Sep 14, 2010 at 10:44 AM, Håkan Granath hakan.gran...@googlemail.com wrote: On Sep 14, 12:16 am, Robert Bradshaw rober...@math.washington.edu wrote: Alastair correctly deduced the issue that it can't tell if

[sage-support] How to deal with write protected data?

2010-09-15 Thread Simon King
Hi! I have the following setting: - There is read-only data in some folder public/ - I want to do further computation, which requires write permission on the data. Obviously, one may write all new data into another folder private/ with write permissions, and read the existing data from public/.

[sage-support] Re: ANN: OpenOpt 0.31, FuncDesigner 0.21, DerApproximator 0.21

2010-09-15 Thread Flavio Coelho
Good news, but I just checked PyPI (via easy_install) and it is still pointing to version 0.28 of openopt. Please upload the latest versions. On Sep 15, 6:18 am, dmitrey dmitrey.kros...@scipy.org wrote: Hi all, I'm glad to inform you about new releases of our completely free (BSD license)

[sage-support] Re: ANN: OpenOpt 0.31, FuncDesigner 0.21, DerApproximator 0.21

2010-09-15 Thread dmitrey
I had uploaded the updated version http://pypi.python.org/pypi?%3Aaction=searchterm=openoptsubmit=search I don't know what's the cause of ver. 0.28 On Sep 15, 4:06 pm, Flavio Coelho fccoe...@gmail.com wrote: Good news, but I just checked PyPI (via easy_install) and it is still pointing to

[sage-support] Re: summation

2010-09-15 Thread sps
Hi, ok I have better understood what you have just said. But mathematically what is the meaning of this: %f([1, 1, - --, --], 4, 32 2 sqrt(3) %i - 1 sqrt(3) %i + 1 %i

[sage-support] Re: summation

2010-09-15 Thread kcrisman
On Sep 15, 10:20 am, sps debernasave...@libero.it wrote: Hi, ok I have better understood what you have just said. But mathematically what is the meaning of this:  %f    ([1, 1, - --, --],         4, 3                2               2                                

[sage-support] Re: installation of Sage

2010-09-15 Thread Michael
YIPPIE! It finally worked, I can now use Sage on my computer. The *readline*- command did help indeed (I must have done something wrong trying it for the first time). THANK YOU ALL SO MUCH! Best regards, Michael On 14 Sep., 03:05, Mitesh Patel qed...@gmail.com wrote: On 09/13/2010 01:57 PM,

Re: [sage-support] Re: installation of Sage

2010-09-15 Thread Mitesh Patel
On 09/15/2010 02:12 PM, Michael wrote: On 14 Sep., 03:05, Mitesh Patel qed...@gmail.com wrote: On 09/13/2010 01:57 PM, Michael wrote: sqlite-3.6.22 [...] bash: symbol lookup error: bash: undefined symbol: rl_filename_rewrite_hook [...] I tired to update bash, but it doesn't semm to make

Re: [sage-support] Re: continued_fraction returns nothing

2010-09-15 Thread Robert Bradshaw
On Wed, Sep 15, 2010 at 3:47 AM, Håkan Granath hakan.gran...@googlemail.com wrote: On Sep 15, 3:44 am, Robert Bradshaw rober...@math.washington.edu wrote: On Tue, Sep 14, 2010 at 10:44 AM, Håkan Granath hakan.gran...@googlemail.com wrote: On Sep 14, 12:16 am, Robert Bradshaw

[sage-support] n() returns symbolic expression

2010-09-15 Thread Paul Zimmermann
this is now in trac: http://trac.sagemath.org/sage_trac/ticket/9913 Paul Zimmermann -- 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

[sage-support] inserting number into symbolic equation

2010-09-15 Thread Mike
Hi, I'm wondering if it is possible to insert a number into symbolic equation. For example: sage: y = x^2 sage: diff(y) 2*x now is it possible to take the results of the derivative, define x as say 3, and get a numeric answer? Thanks -mike- -- To post to this group, send email to

Re: [sage-support] inserting number into symbolic equation

2010-09-15 Thread Justin C. Walker
On Sep 15, 2010, at 20:12 , Mike wrote: Hi, I'm wondering if it is possible to insert a number into symbolic equation. For example: sage: y = x^2 sage: diff(y) 2*x now is it possible to take the results of the derivative, define x as say 3, and get a numeric answer? Thanks Try

[sage-support] Re: Graphics3d Object face_list()

2010-09-15 Thread TeamTeamUSA
Answering my own question. The 3-tuples describe a triangle, the 4-tuples describe a quadrilateral - 2 triangles sharing 2 vertices. Go! =ml= On Sep 7, 11:50 pm, TeamTeamUSA miles...@gmail.com wrote: It seems as if the the Graphics3d Object's face_list() returns a list of 3-tuples or