infinitesimal calculus

During the war it-self, Gottfried Leibnitz of Leipzig had perfected the system of infinitesimal calculus.

The so-called “indeterminate forms” (see Infinitesimal Calculus) are examples.

He also showed that the roots of a cubic equation can be derived by means of the infinitesimal calculus.

This artifice is that which we have noted in 10 as the fundamental artifice of the infinitesimal calculus.

The notation of the infinitesimal calculus is intimately bound up with the notions of differentials and sums of elements.