Title: Dedicated digging brings some of Doran and Lasenby genius
Product review: In chapter five, after typesetting much following of text and problems, I found myself correcting a section and doing grade-0 derivation simplification thinking.Chapter six, I am hoping, is some sort of milestone. I am hoping it is some sort of prelude to general relativity generalization versus gauge theory of gravity choice. Perhaps there I will get intimations of tangent space at each point of spacetime in index free geometric invariants and a similar coordinate free description of the spacetime river falling rendering time asymmetry in something more general than Newtonian gauge so gtg could yield interesting compact topologies.I had already written a sort of review, so this is my current impression.
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