33XX 


Special functions [(33XX deals with the properties of functions as functions)} {For orthogonal functions, see 42Cxx; for aspects of combinatorics see 05Axx; for numbertheoretic aspects see 11XX; for representation theory see 22Exx]} 

33Bxx 

Elementary classical functions 


33B10 
Exponential and trigonometric functions 


33B15 
Gamma, beta and polygamma functions 


33B20 
Incomplete beta and gamma functions (error functions, probability integral, Fresnel integrals) 


33B30 
Higher logarithm functions 


33B99 
None of the above, but in this section 