infinitesimal calculus - the branch of mathematics that is concerned with limits and with the differentiation and integration of functionsmath, mathematics, maths - a science (or group of related sciences) dealing with the logic of quantity and shape and arrangement pure mathematics - the branches of mathematics that study and develop the principles of mathematics for their own sake rather than for their immediate usefulness analysis - a branch of mathematics involving calculus and the theory of limits; sequences and series and integration and differentiation differential calculus, method of fluxions - the part of calculus that deals with the variation of a function with respect to changes in the independent variable (or variables) by means of the concepts of derivative and differential integral calculus - the part of calculus that deals with integration and its application in the solution of differential equations and in determining areas or volumes etc. |