[sage-support] Re: Derivative of functions ...

2018-10-31 Thread Francesco
Il giorno mercoledì 31 ottobre 2018 10:11:34 UTC+1, Francesco ha scritto: > > Hello; I have installed sage 8.4 and I have problem with the derivatives > ... > I have defined a function in sage of this type: > > x=var('x') > def funz(x): >if x >= 0: > return x^2 >else: >

[sage-support] Re: Blue on black text

2018-10-31 Thread Simon King
Hi "drl", you say that your text terminal's default is black background and dark blue text, and if I understand correctly, you don't like that Sage is using your own default color scheme. If your question is how to change the color scheme of your text terminal then I guess it depends on your

Re: [sage-support] Blue on black text

2018-10-31 Thread Daniel Krenn
On 2018-10-31 12:21, deSitter wrote: > My text terminal uses a black background. The default text is dark blue > on jet black. This is not a winning start to 8.4. How do I change the > text color. Seriously, this is the sort of little thing that is > absolutely exasperating, to get a perfect build

[sage-support] Re: Blue on black text

2018-10-31 Thread deSitter
While I'm bitching - every error generates a blizzard of pointless information that belongs in a log file, not in front of the user's eyeballs. That also desperately needs to be fixed. On Wednesday, October 31, 2018 at 7:21:34 AM UTC-4, deSitter wrote: > > My text terminal uses a black

[sage-support] Blue on black text

2018-10-31 Thread deSitter
My text terminal uses a black background. The default text is dark blue on jet black. This is not a winning start to 8.4. How do I change the text color. Seriously, this is the sort of little thing that is absolutely exasperating, to get a perfect build right out of the box and then find it

Re: [sage-support] Derivative of functions ...

2018-10-31 Thread Dima Pasechnik
On Wed, Oct 31, 2018 at 9:11 AM Francesco wrote: > > Hello; I have installed sage 8.4 and I have problem with the derivatives ... > I have defined a function in sage of this type: > > x=var('x') > def funz(x): >if x >= 0: > return x^2 >else: > return x^3 > > but, when I try

Re: [sage-support] Clifford algebras

2018-10-31 Thread David Joyner
On Wed, Oct 31, 2018, 5:52 AM deSitter Hi Sagen, > > Has anyone implemented a non-trivial Clifford algebra module? Such a thing > would be able to generate higher algebras recursively and exhibit 8-fold > periodicity, as well as being useful for actual calculation. > They are implemented in

[sage-support] Clifford algebras

2018-10-31 Thread deSitter
Hi Sagen, Has anyone implemented a non-trivial Clifford algebra module? Such a thing would be able to generate higher algebras recursively and exhibit 8-fold periodicity, as well as being useful for actual calculation. thanks (on 8.4 as of today) -drl -- You received this message because

[sage-support] Derivative of functions ...

2018-10-31 Thread Francesco
Hello; I have installed sage 8.4 and I have problem with the derivatives ... I have defined a function in sage of this type: x=var('x') def funz(x): if x >= 0: return x^2 else: return x^3 but, when I try to calculate diff(funz(x),x) I obtain only 3x^2 and this is wrong