The questions "what is the problem? Did I do something wrong?" do not seem
to be sage development questions, so they should be asked on a different
forum, such as ask.sagemath.org
On Friday, January 10, 2025 at 12:50:25 PM UTC-7 Nasser M. Abbasi wrote:
> I have installed sagemath 10.5 and also fricas 1.3.11, all using pacman
> package manager on EOS/Arch based linux.
>
> i.e. I did not build sagemath 10.5 from sources.
>
> I was trying this integration, where it works using Fricas directly, but
> when I use sagemath and give the algorithm as "fricas", it does not return
> the same result as Fricas does standalone. It returns unevaluated.
>
> Since sagemath is now using the system fricas, then why it does not return
> the same result for same input?
>
> ----------------------------------
> >fricas
> FRICAS="/usr/lib/fricas/target/x86_64-linux-gnu"
> spad-lib="/usr/lib/fricas/target/x86_64-linux-gnu//lib/libspad.so"
> FriCAS Computer Algebra System
> Version: FriCAS 1.3.11 built with sbcl 2.4.5
>
> (1) -> integrand:=(dilog(-x + 1)^2 - log(-x + 1)*polylog(3, x))/x
>
> (2) -> integrate( integrand,x)
>
> (2) dilog(- x + 1)polylog(3,x)
> ---------------------------
>
> Now using sagemath
>
> -----------------
> >which sage
> /usr/bin/sage
> >sage --version
> SageMath version 10.5, Release Date: 2024-12-04
> >which fricas
> /usr/bin/fricas
> >fricas --version
> FriCAS 1.3.11
> based on sbcl 2.4.5
> >sage
> ┌────────────────────────────────────────────────────────────────────┐
> │ SageMath version 10.5, Release Date: 2024-12-04 │
> │ Using Python 3.13.1. Type "help()" for help. │
> └────────────────────────────────────────────────────────────────────┘
> sage: print(fricas.eval(")lisp |$build_version|"))
> Value = "FriCAS 1.3.11"
>
>
> sage: x=var('x')
> sage: integrand=(dilog(-x + 1)^2 - log(-x + 1)*polylog(3, x))/x
>
> sage: integrate(integrand,x,algorithm="fricas")
>
> integral((dilog(-x + 1)^2 - log(-x + 1)*polylog(3, x))/x, x)
>
> I checked and Sagemath supports dilog and polylog functions.
>
> So what is the problem? Did I do something wrong?
>
> Thanks
> --Nasser
>
>
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