Look up nonstandard analysis. It is a formalism that can define calculus, but do... | Hacker News

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		Evbn on Sept 21, 2012 \| parent \| context \| favorite \| on: What are imaginary numbers? Look up nonstandard analysis. It is a formalism that can define calculus, but doesn't have any practical difference on physical computations on real world entities.

Someone on Sept 22, 2012 [–]

For a more playful and, some would say, practical view, read "Winning Ways for Your Mathematical Plays" (http://en.wikipedia.org/wiki/Winning_Ways_for_your_Mathemati...)

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