This looks wonderful, I've dreamt of something like this back when I was in academia!
You mention some advanced stuff like abstract index notation which is usually the hardest part to get right with things like simpy and even mathematica, how does your package handle simplifications of complex tensor expressions (GR, hydrodynamics, etc.)?
You mention some advanced stuff like abstract index notation which is usually the hardest part to get right with things like simpy and even mathematica, how does your package handle simplifications of complex tensor expressions (GR, hydrodynamics, etc.)?