If you're into tensor algebra i can only recommend the beautiful piece of Software Cadabra is: https://cadabra.science/ https://cadabra.science/ We wrote an a

If you're into tensor algebra i can only recommend the beautiful piece of Software Cadabra is: https://cadabra.science/ https://cadabra.science/ We wrote an article with it once, 40th order in the Lagrangian, perhaps 50k pages of calculations when all printed. Amazing tool! Thanks Kasper!