plural of Bessel function

(medicine) The remaining capacity of an organ or body part to fulfil its physiological activity; (especially) in the context of disease, ageing, or impairment.

(computing, database normalization) A constraint between two sets of attributes in a relation.

plural of function key

(mathematics) A function yielding the sum of the divisors of an integer. It is denoted by the Greek letter σ (sigma).

(mathematics) An element of the range of a function. (Or, employing the "machine" metaphor, it is one of the "outputs" of a function.)

(object-oriented programming) Synonym of virtual method

(logic) A function which replaces a variable bound by a universal quantifier which lies in the scope of an even number of logical negations; such function is a function of the remaining bound variables whose scope contain the given variable (being replaced).

(logic) A function which replaces a variable bound by an existential quantifier which lies in the scope of an even number of logical negations; such function is a function of the remaining bound variables whose scope contain the given variable (being replaced).

(computing) A function that modifies a file to make it assume the statistical properties of another file.