Section 3.3 Part 3

Difficult: Especially on pages 118-119, when the sums are changing form over and over I get lost. I admit that I have a hard time fully follwing this part of the proofs. When we talk about them in class I can mainly see it, but not always, and that is what was the hardest in the proof.

Reflective: Theorem 3.3.7 seems very interesting to me. I would have never thought that there would be arithmetic progressions of length k. If possible I would love to see the proof some time during the class.