9

Answers
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74
Proofs without words (2)
39
Awfully sophisticated proof for simple facts
7
How should one present curl and divergence in an undergraduate multivariable calculus class?
14
What’s your favorite equation, formula, identity or inequality?
1
What are the worst notations, in your opinion ?
11
Examples of undergraduate mathematics separation from what mathematicians should know
7
Slick ways to make annoying verifications
6
Strengthening the Induction Hypothesis
3
Work on independence of pi and e