Editing Nonstandard calculus (section)

== External links ==
* {{Cite book|title=Elementary Calculus: An Infinitesimal Approach|last1=Keisler|first1=H. Jerome|publisher=Dover Publications|year=2007|isbn=978-0-48-648452-5}}  [https://people.math.wisc.edu/~keisler/calc.html On-line version (2022)]

* {{Cite book|title=Infinitesimal Calculus|last1=Henle|first1=James M.|last2=Kleinberg|first2=Eugene M.|year=1979|publisher=Dover Publications|isbn=978-0-48-642886-4}} {{Internet Archive|id=infinitesimalcal0000henl_j1k6|name=Infinitesimal Calculus}}

* [http://www.lightandmatter.com/calc/ ''Brief Calculus''] (2005, rev. 2015) by Benjamin Crowel. This short text is designed more for self-study or review than for classroom use.  Infinitesimals are used when appropriate, and are treated more rigorously than in old books like Thompson's ''Calculus Made Easy'', but in less detail than in Keisler's ''Elementary Calculus: An Approach Using Infinitesimals''.

{{Infinitesimals}}

[[Category:Nonstandard analysis]]
[[Category:Calculus]]
[[Category:Infinity]]