Week 6

Posted on 2025-02-17
  • Monday Feb 17 is a holiday; no class.

  • Miderm 1 will be Wednesday Feb 19.

    Here is some review material for the exam.
    solutions to review material.

    Note: I had originally omitted part of the statement of problem V.6 (I hadn’t told you what the symbol \(\gamma\) stood for). I’ve updated the PDF.

    Another note: Upon re-reading, I see that I left out the second half of the proof in solving V.I.a (I had forgotten to include the argument that \(\phi\) is surjective). I’ve updated the text.

  • the fourth problem set is now due the Sunday after the exam (rather than before the exam).

    Problem set 4 due 2025-02-23

    (also, I fixed a type/mistake in the statement of problem 2 of ps4, so make sure you get the latest version which indicates that it was “updated on 2025-02-13”)