4 ms·

A charitable reading is "identical up to isomorphism."

• gugagore 6y ago
  But they're not identical up to isomorphism. That's the point of my comment. You cannot round-trip (r = Inf, theta = .123) to a cartesian representation and back.
  • davidivadavid 6y ago
    That rests on the assumption that the author is using a particular representation for the values, even though the author doesn't indicate anything about that.
    • gugagore 6y ago
      Can you think of a representation where they would be isomorphic?