In my previous column, I outlined the story of the most recent extension of the number system, so that it expanded to include "infinitesimals", numbers smaller than any of our familiar real numbers, and yet not the same as zero.
In my previous column, I outlined the story of the most recent extension of the number system, so that it expanded to include "infinitesimals", numbers smaller than any of our familiar real numbers, and yet not the same as zero.