scalar function
function whose range consists of numbers
stream function
The stream function is constant along a streamline
scalar function of scalar variable
function that takes number and gives another number
loss function
in mathematical optimization, a function (to be minimized) representing the cost of each outcome
real-valued function
function whose range is a subset of the real numbers
complex-valued function
function whose range is a subset of the complex numbers
scalar field
assignment of numbers to points in space