Fwd: [sage-support] Application/Use of Sage in IT company or Industries

2012-05-10 Thread arshpreet singh
hello sage users and developers.one of my friend asked me the following questions.can you please give the sufficient information? I want to ask that what is the use of sage? Why should we use it? Where its being used till date? These questions might be simple and i want to know before i go deep

[sage-support] Compiling SAGE - Bizarre ZFS bug?

2012-05-10 Thread Kevin
Linux dkar.research.pdx.edu 2.6.18-274.3.1.el5xen #1 SMP Tue Sep 6 20:57:11 EDT 2011 x86_64 x86_64 x86_64 GNU/Linux cp -p ../include/NTL/*.h /n/oregano.cic.pdx.edu/export/vol-apps/apps-linux-x86_64/user/src/sage-4.8/local/include/NTL cp: preserving permissions for

Re: [sage-support] Application/Use of Sage in IT company or Industries

2012-05-10 Thread William Stein
On Thu, May 10, 2012 at 1:22 AM, Priyanka Kapoor anjalicool.kapoor...@gmail.com wrote: I want to ask that what is the use of sage? Why should we use it? Where its being used till date? That's kind of impossible to answer. Imagine if somebody asked you: What is the use of mathematics? Why

Re: [sage-support] Solving second degree ODE with constants in sage

2012-05-10 Thread Jose Guzman
Hi Priyanka, I would first define well the problem and the equation (you have terms like c, and d that you are not using). It seems like you are trying to solve the equation of a undampened string with a constant attached to it. I would do it like this: x = var('x') # independent variable b =

Re: [sage-support] Application/Use of Sage in IT company or Industries

2012-05-10 Thread Nathann Cohen
That's specifically the kind of questions that make me hate the scientific spirit. Prove it, or it does not exist, instead of It looks like it exists but I don't get how. I think that Sage is useless, and as the mathematics that made me work on it are totally useless too I do not mind much.

Re: [sage-support] Application/Use of Sage in IT company or Industries

2012-05-10 Thread David Kirkby
William, I think you are being overly negative, although I agree the question could have been put a little better. If someone is thinking of using Sage in industry, they are likely to want to know how much it is used in industry. I think I'd answer this by pointing out some of the advantages

Re: [sage-support] Compiling SAGE - Bizarre ZFS bug?

2012-05-10 Thread Michael Orlitzky
On 05/09/12 21:10, Kevin wrote: Linux dkar.research.pdx.edu 2.6.18-274.3.1.el5xen #1 SMP Tue Sep 6 20:57:11 EDT 2011 x86_64 x86_64 x86_64 GNU/Linux cp -p ../include/NTL/*.h /n/oregano.cic.pdx.edu/export/vol-apps/apps-linux-x86_64/user/src/sage-4.8/local/include/NTL cp: preserving

[sage-support] Re: Customising latex() output

2012-05-10 Thread Nicu Tofan
Hello, John, thank you for your answer! I must have missed the mail about thread update, sorry for late reply. I will think about your solution. Nick -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to

[sage-support] Re: sag single cell server

2012-05-10 Thread Jason Grout
On 5/10/12 10:54 AM, arshpreet singh wrote: hello sage-usrs. cheers :) please give me the link of the tutorials which explain about the using sage single cell server code in webpages http://sage.math.washington.edu/home/jason/sagecell/embedding.html Thanks, Jason -- To post to this

Re: [sage-support] Application/Use of Sage in IT company or Industries

2012-05-10 Thread H.S.Rai
On Thu, May 10, 2012 at 6:36 PM, David Kirkby david.kir...@onetel.net wrote: I think you are being overly negative, although I agree the question could have been put a little better. If someone is thinking of using Sage in industry, they are likely to want to know how much it is used in

[sage-support] Discrepancy in assumptions and assume

2012-05-10 Thread Duc Trung Ha
Hola, would anybody be so kind and explain to me the mechanism behind assume(sth)? I strive to understand (without success, unfortunaly) following behavior: sage: assume(x-2 = 0) sage: assumptions() [x - 2 = 0] sage: assume(x-1 = 0) sage: assumptions() [x - 2 = 0] x-1 = 0 is not

[sage-support] Re: Discrepancy in assumptions and assume

2012-05-10 Thread John H Palmieri
On Thursday, May 10, 2012 2:41:07 PM UTC-7, Duc Trung Ha wrote: Hola, would anybody be so kind and explain to me the mechanism behind assume(sth)? The mechanism seems to be broken. Actually, the mechanism that compares boolean expressions seems to be broken, which means that assumptions

[sage-support] Re: Discrepancy in assumptions and assume

2012-05-10 Thread Duc Trung Ha
Is there any way to fix it (at least by yourself, in Sage's source code) ? On Friday, May 11, 2012 1:14:01 AM UTC+2, John H Palmieri wrote: On Thursday, May 10, 2012 2:41:07 PM UTC-7, Duc Trung Ha wrote: Hola, would anybody be so kind and explain to me the mechanism behind assume(sth)?

[sage-support] Re: Discrepancy in assumptions and assume

2012-05-10 Thread kcrisman
On Thursday, May 10, 2012 7:14:01 PM UTC-4, John H Palmieri wrote: On Thursday, May 10, 2012 2:41:07 PM UTC-7, Duc Trung Ha wrote: Hola, would anybody be so kind and explain to me the mechanism behind assume(sth)? The mechanism seems to be broken. Actually, the mechanism that

Re: [sage-support] Solving second degree ODE with constants in sage

2012-05-10 Thread Priyanka Kapoor
I would do it like this: x = var('x') # independent variable b =  var('b')   # constant y = function('y', x) # unknown function # define 2nd order ODE; (undampened spring with unit of mass attached) myode = diff(y,x,2)+b*y == 0 # define 2order ODE assume(b0) # mass is always possitive