fractional calculus

Noun

 * 1)  The branch of mathematics that studies generalisations of calculus to allow noninteger (i.e., real or complex) powers of the differentiation operator D and the integration operator J;  any one of said generalisations of calculus.
 * 2) * 2000, Carl F. Lorenzo, Tom T. Hartley, Initialized Fractional Calculus, NASA, NASA/TP—2000-209943, page 12,
 * The paper presents the definition sets required for initialized fractional calculi. Two underlying bases have been used, the Riemann-Liouville based fractional calculus and the Grünwald based functional calculus (by reference).

Translations

 * French: analyse fractionnaire
 * German: fraktionale Infinitesimalrechnung
 * Italian: calcolo frazionario
 * Portughese: cálculo fracionário, cálculo de ordem não inteira
 * Spanish: cálculo fraccional