Any acceptance of infinitesimals necessarily meant that his own theory of number was incomplete. Source: Internet
A text using infinitesimals. Source: Internet
Cauchy in 1821 defined continuity in terms of infinitesimals (see Cours d'Analyse, page 34). Source: Internet
Euclid used the method of exhaustion rather than infinitesimals. Source: Internet
For example, it is not enough to construct an ordered field with infinitesimals. Source: Internet
From this point of view, calculus is a collection of techniques for manipulating infinitesimals. Source: Internet