Re: [sage-support] Re: Sagemanifolds: object has no attribute 'exterior_der'

Le jeudi 8 février 2024 à 13:45:18 UTC+1, Dominic Steinitz a écrit : Sorry about posting the same thing twice. No problem. Just for reference, in case someone reads this thread: the answer about the connection forms is here: https://ask.sagemath.org/question/75256/connection-forms-not-anti-symm

Re: [sage-support] Re: Sagemanifolds: object has no attribute 'exterior_der'

Sorry about posting the same thing twice. On Wednesday 7 February 2024 at 19:26:32 UTC G. M.-S. wrote: > > Just to say that > https://ask.sagemath.org > gives me > 502 Bad Gateway > > Guillermo > > On Wed, 7 Feb 2024 at 19:35, Eric Gourgoulhon wrote: > >> Le mercredi 7 février 2024 à 15:46:05 UT

Re: [sage-support] Re: Sagemanifolds: object has no attribute 'exterior_der'

Just to say that https://ask.sagemath.org gives me 502 Bad Gateway Guillermo On Wed, 7 Feb 2024 at 19:35, Eric Gourgoulhon wrote: > Le mercredi 7 février 2024 à 15:46:05 UTC+1, Dominic Steinitz a écrit : > > The example here https://sagemanifolds.obspm.fr/examples.html of > > >- Electromagn

[sage-support] Re: Sagemanifolds: object has no attribute 'exterior_der'

Le mercredi 7 février 2024 à 15:46:05 UTC+1, Dominic Steinitz a écrit : The example here https://sagemanifolds.obspm.fr/examples.html of - Electromagnetism in Minkowski spacetime [ipynb