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Various bits of supplementary material that
are made available over the course of the semester:
GRTool.nb, a Mathematica
notebook to expedite the more tedious tensor
manipulations.
Notes on GR using a tetrad based orthonormal basis rather than the
more usual coordinate basis.
Notes on conservation
of the stress energy tensor.
Notes on the
non-tensor nature of partial derivatives.
More efficient tensor manipulation tools: GRUtilities.nb, GRUtilities.m, and a worked
example, GRUtilities_example.nb.
These utilities brought to you courtesy of Connor McEntee, who wrote
them to facilitate manipulating metrics and curvature
tensors in the course of his string theory research.
A brief clarifying note on problem 1 of pset
6.
A brief clarifying note on problem 4 of pset
9.
Some notes on
numerical integration for the neutron star structure
problem.

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