Re: [sage-support] Re: How to treat (multiple) zeta values as real symbolic constants?

2017-03-30 Thread Brent Pym
Okay, thanks very much for all your prompt and helpful replies! On 30 March 2017 at 09:42, Ralf Stephan wrote: > On Thursday, March 30, 2017 at 10:38:49 AM UTC+2, Brent Pym wrote: >> >> Thank you very much! By opening these tickets, you have certainly >> answered my

[sage-support] Re: How to treat (multiple) zeta values as real symbolic constants?

2017-03-30 Thread Ralf Stephan
On Thursday, March 30, 2017 at 10:38:49 AM UTC+2, Brent Pym wrote: > > Thank you very much! By opening these tickets, you have certainly > answered my questions. Is the etiquette to mark this thread as complete > now, or wait until the tickets have been closed? > Threads in sage-devel or

[sage-support] Re: How to treat (multiple) zeta values as real symbolic constants?

2017-03-30 Thread Brent Pym
Thank you very much! By opening these tickets, you have certainly answered my questions. Is the etiquette to mark this thread as complete now, or wait until the tickets have been closed? On Thursday, 30 March 2017 08:58:07 UTC+1, Ralf Stephan wrote: > > I also opened

[sage-support] Re: How to treat (multiple) zeta values as real symbolic constants?

2017-03-30 Thread Ralf Stephan
I also opened https://trac.sagemath.org/ticket/22713 -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com. To post to this

[sage-support] Re: How to treat (multiple) zeta values as real symbolic constants?

2017-03-30 Thread Ralf Stephan
On Thursday, March 30, 2017 at 9:08:24 AM UTC+2, Brent Pym wrote: > Do I understand correctly that multiple polylogs and multiple zeta values are implemented in GiNaC/Pynac but not yet wrapped in SageMath? They are in GiNaC but the code in Pynac is degenerated for various reasons, eg the

[sage-support] Re: How to treat (multiple) zeta values as real symbolic constants?

2017-03-30 Thread Brent Pym
Also, I realized that, more generally, conjugate passes through sin because of the holomorphicity: sage: conjugate(sin(1+I)) sin(-I + 1) Maybe this would be nice for other holomorphic functions, like zeta? But perhaps that's how you had in mind to implement it anyways. -- You received this

[sage-support] Re: How to treat (multiple) zeta values as real symbolic constants?

2017-03-30 Thread Brent Pym
> > Yes, the elementary functions had this implemented only recently, and I'm > happy to add more knowledge like that. > Great, thanks a lot! Do I understand correctly that multiple polylogs and multiple zeta values are implemented in GiNaC/Pynac but not yet wrapped in SageMath? -- You

[sage-support] Re: How to treat (multiple) zeta values as real symbolic constants?

2017-03-28 Thread Ralf Stephan
On Tuesday, March 28, 2017 at 7:44:14 PM UTC+2, kcrisman wrote: > > On Tuesday, March 28, 2017 at 10:15:22 AM UTC-4, Brent Pym wrote: >> >> For a real number *s*, the value* zeta(s)* of the Riemann zeta function >> is real, but SageMath does not seem to recognize this fact. Here is an >>

[sage-support] Re: How to treat (multiple) zeta values as real symbolic constants?

2017-03-28 Thread kcrisman
On Tuesday, March 28, 2017 at 10:15:22 AM UTC-4, Brent Pym wrote: > > For a real number *s*, the value* zeta(s)* of the Riemann zeta function > is real, but SageMath does not seem to recognize this fact. Here is an > example (SageMath 7.5.1): > > sage: conjugate(zeta(3)) > conjugate(zeta(3))