[sage-support] Re: symbolic manipulations in fields

2007-06-09 Thread Jason Grout
William Stein wrote: > On 6/9/07, Jason Grout <[EMAIL PROTECTED]> wrote: >> I'm trying to do some symbolic calculations in a field, say GF(3). Is >> there a proper way to do this different than my example below? The >> approach below of using a fraction field of a polynomial ring >> containing m

[sage-support] Re: symbolic manipulations in fields

2007-06-09 Thread William Stein
On 6/9/07, Jason Grout <[EMAIL PROTECTED]> wrote: > > I'm trying to do some symbolic calculations in a field, say GF(3). Is > there a proper way to do this different than my example below? The > approach below of using a fraction field of a polynomial ring > containing my variables over the fiel

[sage-support] symbolic manipulations in fields

2007-06-09 Thread Jason Grout
I'm trying to do some symbolic calculations in a field, say GF(3). Is there a proper way to do this different than my example below? The approach below of using a fraction field of a polynomial ring containing my variables over the field I'm working in seems to work mostly, but there are some er

[sage-support] Re: My JPL talk

2007-06-09 Thread David Joyner
Many thanks Pere for advertising SAGE in Spanish and good luck with your talk! + Pere Urbón-Bayes wrote: > Hello to every one, on my SAGE web site [1] any one could find my VI > Jornades de programari lliure talk. > I'll give this SAGE introduction talk t

[sage-support] Re: Upgrade Question

2007-06-09 Thread William Stein
On 6/8/07, dave dobbs <[EMAIL PROTECTED]> wrote: > Hi William, > > This is a follow-up to my previous reply with two points: > > 1. I was in error when I said Reset under the VM pull-down, it's found under > the Power tab (but I'm sure you knew that.) > > 2. I ran into problems when trying to exec

[sage-support] Re: Explicitly calling bitwise xor?

2007-06-09 Thread William Stein
On 6/8/07, Andrew Budker <[EMAIL PROTECTED]> wrote: > I should probably mention that i'm writing some crypto stuff, so the > integers im dealing with are from the python ord() function (getting > ascii values from strings). So the return type is a python long not a > sage.integer. I can go back an

[sage-support] Re: Maxima requested additional constraints in solve()

2007-06-09 Thread William Stein
On 6/9/07, Joel B. Mohler <[EMAIL PROTECTED]> wrote: > On Saturday 09 June 2007 13:16, William Stein wrote: > > It would be more natural to write "assume(n in ZZ)", but this won't work, > > since "n in ZZ" gets evaluated to false be Python before it gets passed > > to the assume command. > > This

[sage-support] Re: Maxima requested additional constraints in solve()

2007-06-09 Thread Joel B. Mohler
On Saturday 09 June 2007 13:16, William Stein wrote: > It would be more natural to write "assume(n in ZZ)", but this won't work, > since "n in ZZ" gets evaluated to false be Python before it gets passed > to the assume command. This was exactly what I tried when the original e-mail was sent out a

[sage-support] Re: Maxima requested additional constraints in solve()

2007-06-09 Thread William Stein
On 6/9/07, Ted Kosan <[EMAIL PROTECTED]> wrote: > When I use the solve() function with this code: > > var('r2') > c = P*e^(r*n) > d = P*(1+r2)^n > solve(c==d,r2) > > I receive the following exception: ... > TypeError: Computation failed since Maxima requested additional > constraints (use assume):

[sage-support] Maxima requested additional constraints in solve()

2007-06-09 Thread Ted Kosan
Hello, When I use the solve() function with this code: var('r2') c = P*e^(r*n) d = P*(1+r2)^n solve(c==d,r2) I receive the following exception: Traceback (most recent call last): File "", line 1, in File "/home/sage/sage_notebook/worksheets/kosan_ma_p236/code/2.py", line 8, in

[sage-support] My JPL talk

2007-06-09 Thread Pere Urbón-Bayes
Hello to every one, on my SAGE web site [1] any one could find my VI Jornades de programari lliure talk. I'll give this SAGE introduction talk the next month on this regional meting on Catalonia, for this think the document is written in Catalan, my mother tongue and the meting main language. I