fancu gismu

x1 is a function/single-valued mapping from domain x2 to range x3 defined by expression/rule x4.

See also mekso, bridi.


In notes:

bridi
x1 (du'u) is a predicate relationship with relation x2 among arguments (sequence/set) x3.
mekso
x1 [quantifier/expression] is a mathematical expression interpreted under rules/convention x2.
funtiio
x1 (plural of ordered pairs) is an exhaustive set (possibly infinite) of inputs/outputs defining a unary function which yields result x3 when given input x2; x1(x2) = x3
integrale
x1 (number) is the integral (limit) of function x2