Found 2 items, similar to Infinitesimal calculus.
English → English (WordNet) Definition: infinitesimal calculus infinitesimal calculus n : the branch of mathematics that is concerned with limits and with the differentiation and integration of functions [syn: calculus, the calculus]
English → English (gcide) Definition: Infinitesimal calculus Infinitesimal \In`fin*i*tes"i*mal\, a. [Cf. F. infinit['e]simal, fr. infinit['e]sime infinitely small, fr. L. infinitus. See Infinite, a.] Infinitely or indefinitely small; less than any assignable quantity or value; very small. [1913 Webster] Infinitesimal calculus, the different and the integral calculus, when developed according to the method used by Leibnitz, who regarded the increments given to variables as infinitesimal. [1913 Webster]