[sage-support] Re: Why factor(6*x+3) doesn't give 3*(2*x+1) in SageCell?

2017-04-07 Thread Ralf Stephan
On Friday, April 7, 2017 at 5:29:39 PM UTC+2, Chris Seberino wrote: > > I *agree* that the answer should be expanded in your example. > But when you use the factor function it should have an effect no!? > That's why I gave the link to the ticket, which you can follow or participate in. -- You

[sage-support] Re: Sage Crash Report

2017-04-07 Thread Dima Pasechnik
What version of Sage is this? It's not clear from the log. The log mentions iPython 4, whereas Sage has switched to iPython 5. It could be that the error comes from some stale content in ~/.sage/ As a 1st check, try to rename ~/.sage/ to something else, and see if it starts then. On Friday, Ap

Re: [sage-support] Why factor(6*x+3) doesn't give 3*(2*x+1) in SageCell?

2017-04-07 Thread Dima Pasechnik
On Friday, April 7, 2017 at 5:18:34 PM UTC+1, Chris Seberino wrote: > > I have no doubt you know about group theory and math in general more than > me. I have no doubt > your answer is defensible and accurate. > > What I'm concerned about is the young students and what they expect to see > w

[sage-support] Re: Sage 7.6 installation on OS 10.12 problems

2017-04-07 Thread slelievre
Wed 2017-04-05 00:36:04 UTC+2, Volker Braun: > > On Monday, April 3, 2017 at 2:22:48 AM UTC+2, Ruben Zilibowitz wrote: >> >> ImportError: >> dlopen(/Volumes/LaCie/Applications/SageMath-7.6.app/Contents/Resources/sage/local/lib/python2.7/lib-dynload/operator.so, >> >> 2): Symbol not found: __PyU

[sage-support] Re: https: // localhost: 8000 .

2017-04-07 Thread slelievre
Bonjour, s'agit-il d'une utilisation sous Windows? Il y a plusieurs façons d'installer Sage sous Windows: - installeur SageMath pour Windows (installeur natif, qui requiert simplement une version 64-bit de Windows): utiliser l'installeur .exe le plus récent disponible à la page https://

Re: [sage-support] Why factor(6*x+3) doesn't give 3*(2*x+1) in SageCell?

2017-04-07 Thread Chris Seberino
I have no doubt you know about group theory and math in general more than me. I have no doubt your answer is defensible and accurate. What I'm concerned about is the young students and what they expect to see when they type factor( ... ). cs On Friday, April 7, 2017 at 9:56:31 AM UTC-5, pro

[sage-support] Re: Why factor(6*x+3) doesn't give 3*(2*x+1) in SageCell?

2017-04-07 Thread Chris Seberino
I *agree* that the answer should be expanded in your example. But when you use the factor function it should have an effect no!? (I saw the other reply about rings. See my reply to that if you wish too.) On Friday, April 7, 2017 at 3:04:01 AM UTC-5, Ralf Stephan wrote: > > Because in the symboli

Re: [sage-support] Why factor(6*x+3) doesn't give 3*(2*x+1) in SageCell?

2017-04-07 Thread Christophe BAL (via GMAIL)
Just try : - Z_T, t = ZZ['x'].objgen() print factor(6*t+3) print factor(6*x+3) - You will se that you need to use the right ring of polynomials. C. -- You received this message because you are subscribed to the Google Groups "s

Re: [sage-support] Why factor(6*x+3) doesn't give 3*(2*x+1) in SageCell?

2017-04-07 Thread Chris Seberino
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[sage-support] Re: Why factor(6*x+3) doesn't give 3*(2*x+1) in SageCell?

2017-04-07 Thread Ralf Stephan
Because in the symbolic ring 3*(2*x+1) is immediately expanded again. Try yourself: sage: 2*(1+3*x) 6*x + 2 But see also https://trac.sagemath.org/ticket/21067 Regards, On Thursday, April 6, 2017 at 5:47:28 PM UTC+2, Chris Seberino wrote: > > Why factor(6*x+3) doesn't give 3*(2*x+1) ? > > Than