ASKSAGE: Sage Q&A Forum - RSS feedhttps://ask.sagemath.org/questions/Q&A Forum for SageenCopyright Sage, 2010. Some rights reserved under creative commons license.Sun, 04 Jul 2021 22:32:34 +0200Problem with Metric Tensor coordinate change.https://ask.sagemath.org/question/57867/problem-with-metric-tensor-coordinate-change/ I define a M manifold with three charts, I then define a metric on one of the charts MH. I then want to see the metric components in one of the other charts BL. I have defined differential maps between the charts.
gMann(MH) works and I can display the components but,
gMann(BL) gives the error:
ValueError: the provided domain is not a subset of the field's domain
print(subdomain,self._restrictions) gives 'Open subset MBL of the 4-dimensional Lorentzian manifold M {}' .
How do I make this work please?
I will post the code in comments below.AlanTStaffordSun, 04 Jul 2021 22:32:34 +0200https://ask.sagemath.org/question/57867/