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JoanVazquez

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  • I finally reached chapter 5 (at my own slow path) and now I understand John's statement: as the book proceeds and the 'sketches' get more sketchy, leaving me to fill in more details. And that's why I will miss your lectures for chapters 5 - 7 …
  • Still trying to figure out Puzzles 150 - 155 (note that the numbering of the last two puzzles is repeated in the original post, I am extending it here). To wrap up the solutions so far: Puzzle 150: \( R(S) = (S, 1) \) for any set \( S \) and \…
  • Thank you very much for this course, John, reading a lecture or doing an exercise on my train to/from work makes my day (that's ~5h/week dedication). Since the beginning, I was unable to keep up with your speed, but it did not matter at all. The le…
  • Puzzle 4. Just to give an "applied" example: In rational continuum mechanics, Truesdell starts defining a poset, and then a Boolean algebra, to construct a "universe of bodies" in which to define mechanics (see Clifford Truesdell, A first course in…