(programming) An anonymous function; a function that is defined in an inline, ad-hoc manner, and often doesn't have a name (not bound to an identifier).

plural of indicator function

(mathematics) A Schur polynomial. / (mathematics) A holomorphic function in the Schur class.

plural of Schur function

plural of Borel function

(mathematics) The second of the polygamma functions, after the digamma function.

plural of polygamma function

(mathematics) A meromorphic function on ℂ, defined as the (m+1)-th derivative (for a given order m) of the logarithm of the gamma function.

plural of digamma function

(mathematics) The first of the polygamma functions, being the logarithmic derivative of the gamma function.