1. (difficult) While trying to understand the proofs for convergence of an infinite series, I am having a hard time grasping the concept of epsilon ad it's necessity in the proof. I am also very confused by the notation in the book. It is possible that it is a misprint, but on page 275 directly above the second Lemma 12.8 It has an almost bracket looking symbol around 1/epsilon. I don't have a clue what that means.
2. (reflective) I am realizing as I am trying to understand these proofs how integral an understanding of epsilon is, and I don't know what it means, nor can I glean any sort of understanding from the text. All I know about it is that it is crucial to these proofs.
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