Name: Vladyslav Shtabovenko (email_not_shown)
Date: 05/06/16-11:47:15 AM Z


Hi,

1) you seem to use FeynCalc 8.2. Is there any reason why you can't
upgrade to 9.x?

<https://github.com/FeynCalc/feyncalc/wiki/Installation>

2) If there are still issues, please provide a minimal working example
that reproduces the problem.

Cheers,
Vladyslav

Am 06.05.2016 um 11:44 schrieb Yan:
> I am now using Tarcer in feyncal to calculate 2-loop integrals on Macos. When I use TarcerRecurse[ ], I get some errors:
>
> "Pattern HighEnergyPhysics`Tarcer`Private`PP_ appears on the \
> right-hand side of rule Subscript[\[CapitalDelta], \
> 246]->(HighEnergyPhysics`Tarcer`Private`m2^2-2\ \
> HighEnergyPhysics`Tarcer`Private`m2\ \
> HighEnergyPhysics`Tarcer`Private`m4+HighEnergyPhysics`Tarcer`Private`\
> m4^2-HighEnergyPhysics`Tarcer`Private`PP_)\ \
> (HighEnergyPhysics`Tarcer`Private`m2^2+2\ \
> HighEnergyPhysics`Tarcer`Private`m2\ \
> HighEnergyPhysics`Tarcer`Private`m4+HighEnergyPhysics`Tarcer`Private`\
> m4^2-HighEnergyPhysics`Tarcer`Private`PP_). ď
>
> Pattern::patvar: First element in pattern Pattern[0,_] is not a valid pattern name. >>
> Pattern::patvar: First element in pattern Pattern[P^2,_] is not a valid pattern name. >>
> etc.
>
> Could you please tell me what does that mean?
> Those errors didn't appear when I compile Tarcer in a linux machine to get *.mx file and use it in mac os.
>
> And I also get some function with arguments like
>
> {HighEnergyPhysics`Tarcer`Private`n1, HighEnergyPhysics`Tarcer`Private`m1}{HighEnergyPhysics`Tarcer`Private`n2,HighEnergyPhysics`Tarcer`Private`m2}
>
> What is n1,n2,m1,m2? I didnít find the explanation in Tarcer documentation.
>
> Thanks!
> Best regards,
> Yan
>



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