33-XX Special functions (33-XX deals with the properties of functions as functions) {For orthogonal functions, see 42Cxx; for aspects of combinatorics, see 05Axx; for number-theoretic aspects, see 11-XX; for representation theory, see 22Exx} 47802
33B20 Incomplete beta and gamma functions (error functions, probability integral, Fresnel integrals) 757