From: John Gabriel
Affiliation: None
Address: http://mathphile.blogspot.com
Date: 14 Apr 2009
Time: 22:35:41
I was amused reading your email exchanges. An infinitesimal is ill-defined and does not exist in theory or otherwise. Differentials such as dx and dy have nothing to do with limits. The inventors of calculus knew nothing about limits. Here are some links you might be interested in: http://mathphile.blogspot.com/2008/10/what-is-fraction-and-what-does-it-have.html http://mathphile.blogspot.com/2008/07/more-on-differentials-and-difference.html http://mathphile.blogspot.com/2008/09/what-are-differentials-in-calculus.html
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