Their work thereby avoided the traditional differential calculus, for which the maximumoperator did not apply to non-differentiable functions.
en.wikipedia.org However, the decline of differential calculus should not be exaggerated, because differential calculus has always been used in graduate training and in applications.
en.wikipedia.org Only in the 18th century was the theorem interpreted as a fundamental result in differential calculus.
en.wikipedia.org During her studies, she took every mathematics course offered, including spherical trigonometry, differential calculus, projective geometry, partial differential equations, and statistics.
en.wikipedia.org The primary objects of study in differential calculus are the derivative of a function, related notions such as the differential, and their applications.
en.wikipedia.org