[sage-devel] Re: Wolfram|Alpha appears to understand some Sage inputs

2011-02-24 Thread Ira Baxter
On Feb 23, 11:37 am, rjf wrote: > On Feb 23, 9:17 am, "Dr. David Kirkby" > wrote: > > > On 02/22/11 10:57 PM, Dr. David Kirkby wrote: > > > > On 02/22/11 03:49 PM, rjf wrote: > [snip]. The real difficulty is > > >> to implement a Mathematica language parser, since the language > > >> fails to fit

[sage-devel] Gram-Schmidt

2011-02-24 Thread Rob Beezer
I'm working to expand the utility of the Gram-Schmidt vector orthogonalization routines. Mostly this is on the back of two QR matrix decomposition routines, one for exact fields that contain their square roots (ie QQbar), the other for matrices over RDF/CDF, plus an existing routine. The more sta

[sage-devel] Re: exceptions, Python, Cython, C

2011-02-24 Thread Nils Bruin
On Feb 24, 8:52 pm, Robert Miller wrote: > I'm working on wrapping a C package in Cython for use in Sage, and I'm > having some trouble. I think the problem has to do with the fact that > the C program uses stderr to report issues. When the program exits, I > get the following message: > > SystemE

Re: [sage-devel] exceptions, Python, Cython, C

2011-02-24 Thread Robert Bradshaw
On Thu, Feb 24, 2011 at 8:52 PM, Robert Miller wrote: > I'm working on wrapping a C package in Cython for use in Sage, and I'm > having some trouble. I think the problem has to do with the fact that > the C program uses stderr to report issues. When the program exits, I > get the following message

[sage-devel] exceptions, Python, Cython, C

2011-02-24 Thread Robert Miller
I'm working on wrapping a C package in Cython for use in Sage, and I'm having some trouble. I think the problem has to do with the fact that the C program uses stderr to report issues. When the program exits, I get the following message: SystemError: error return without exception set I've looked

[sage-devel] Re: Support contracts for commercial customers.

2011-02-24 Thread kcrisman
For some perspective (in the very big business of modeling and stats, where people are trying to harness GPL software - and apparently are successful), see http://www.revolutionanalytics.com/ http://www.revolutionanalytics.com/products/revolution-r.php http://www.mango-solutions.com/ Packaging

Re: [sage-devel] Re: Support contracts for commercial customers.

2011-02-24 Thread Robert Bradshaw
On Thu, Feb 24, 2011 at 11:18 AM, Tom Boothby wrote: >> I'm also curious about honest *opinions* about how people in the Sage >> community would feel about a company making potentially gobs of money >> selling support contracts?   What balance between profit and giving >> back to the community wou

Re: [sage-devel] Re: Support contracts for commercial customers.

2011-02-24 Thread William Stein
On Thu, Feb 24, 2011 at 11:35 AM, daly wrote: > >> I'm also curious about honest *opinions* about how people in the Sage >> community would feel about a company making potentially gobs of money >> selling support contracts?   What balance between profit and giving >> back to the community would be

Re: [sage-devel] Re: Support contracts for commercial customers.

2011-02-24 Thread William Stein
On Thu, Feb 24, 2011 at 12:01 PM, Jason Grout wrote: > On 2/24/11 11:28 AM, William Stein wrote: > >> I'm also curious about honest *opinions* about how people in the Sage >> community would feel about a company making potentially gobs of money >> selling support contracts?   What balance between

[sage-devel] Re: Support contracts for commercial customers.

2011-02-24 Thread Jason Grout
On 2/24/11 11:28 AM, William Stein wrote: I'm also curious about honest *opinions* about how people in the Sage community would feel about a company making potentially gobs of money selling support contracts? What balance between profit and giving back to the community would be appropriate? W

Re: [sage-devel] Re: Support contracts for commercial customers.

2011-02-24 Thread daly
On Thu, 2011-02-24 at 11:18 -0800, Tom Boothby wrote: > > I'm also curious about honest *opinions* about how people in the Sage > > community would feel about a company making potentially gobs of money > > selling support contracts? What balance between profit and giving > > back to the community

Re: [sage-devel] Re: Support contracts for commercial customers.

2011-02-24 Thread daly
> I'm also curious about honest *opinions* about how people in the Sage > community would feel about a company making potentially gobs of money > selling support contracts? What balance between profit and giving > back to the community would be appropriate? What services might be > offensive, a

Re: [sage-devel] Re: Support contracts for commercial customers.

2011-02-24 Thread Tom Boothby
> I'm also curious about honest *opinions* about how people in the Sage > community would feel about a company making potentially gobs of money > selling support contracts?   What balance between profit and giving > back to the community would be appropriate?  What services might be > offensive, an

Re: [sage-devel] Re: Support contracts for commercial customers.

2011-02-24 Thread William Stein
On Thu, Feb 24, 2011 at 6:52 AM, kcrisman wrote: > > > On Feb 24, 6:09 am, Jeroen Demeyer wrote: >> On 2011-02-24 10:30, Dr. David Kirkby wrote: >> >> > Any comments? Is there any chance of implementing this? >> >> Who is going to do this commercial support? > > There's been talk of founding a co

[sage-devel] Re: Support contracts for commercial customers.

2011-02-24 Thread kcrisman
On Feb 24, 6:09 am, Jeroen Demeyer wrote: > On 2011-02-24 10:30, Dr. David Kirkby wrote: > > > Any comments? Is there any chance of implementing this? > > Who is going to do this commercial support? There's been talk of founding a company which would support notebook servers, provide them - sor

Re: [sage-devel] Support contracts for commercial customers.

2011-02-24 Thread Jeroen Demeyer
On 2011-02-24 10:30, Dr. David Kirkby wrote: > Any comments? Is there any chance of implementing this? Who is going to do this commercial support? -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googl

[sage-devel] Support contracts for commercial customers.

2011-02-24 Thread Dr. David Kirkby
I know I touched on this subject some time ago, but nothing was ever done about it, yet I feel this could potentially increase the use of Sage. I know most of the users on this list are academics and students, so might not appreciate some of the problems users in commercial companies have, but