- 22,169
- 3,327
- Author: Poalo Aluffi
- Title: Algebra: Chapter 0
- Amazon link https://www.amazon.com/dp/0821847813/?tag=pfamazon01-20
- Level: Undergrad
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MAA review:Proving the snake lemma is something that should not be done in public, and it is notoriously useless to write down the verification for others to read: the details are all essentially obvious, but they quickly lead to a notational quagmire. Such proofs are collectively known as the sport of diagram chase, best executed by pointing several fingers at different parts of a diagram on a blackboard while enunciating the elements one is manipulating and stating their fate.