A pair of functions and are orthonormal if they are orthogonal and each normalized so that
(1)
| |||
(2)
|
These two conditions can be succinctly written as
(3)
|
where is a weighting function and is the Kronecker delta.
A pair of functions and are orthonormal if they are orthogonal and each normalized so that
(1)
| |||
(2)
|
These two conditions can be succinctly written as
(3)
|
where is a weighting function and is the Kronecker delta.
Weisstein, Eric W. "Orthonormal Functions." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/OrthonormalFunctions.html