When I was in calculus, the notion of the infinitesimal, the smallest possible unit, was really emphasized.(adsbygoogle = window.adsbygoogle || []).push({});

When I switched into a more theoretical section of calculus (analysis in R^n), nothing about infinitesimals is said, instead all the proofs are in the style of epsilons and deltas.

Is the infinitesimal just a broad statement about something like for all epsilon strictly greater than zero this must work?

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# Notion of the infinitesimal analysis in R^n

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