Thomas comments on Infinitesimals: Another argument against actual infinite sets - Less Wrong

-21 Post author: common_law 26 January 2013 03:04AM

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Comment author: Thomas 26 January 2013 05:01:19PM 4 points [-]

Infinitesimals in the old sense are no longer with us. For a century and a half.

But they can be redefined as the hyperreal numbers

Comment author: Oscar_Cunningham 26 January 2013 06:21:39PM 10 points [-]

Or the surreal numbers, or the dual numbers, or about a billion other systems of infinitesimals that mathematicians use.

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