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Talk:Line element/to do

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Tasks for expert:

  • completely rewrite, bearing in mind applications in physics
  • better discussion of 2,3,4+ dimensions, e.g. properties of metric tensor special to low dimensions
  • clarify Riemannian versus semi-Riemannian manifolds
  • clarify flat versus nonflat spaces, spacetimes
  • better examples (give range of coordinates, specify whether any functions used are arbitrary smooth or whatever)

Tasks for anyone:

  • improve diction

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