.md#^566641) a pair of _[unit vectors](Linear%20Algebra%20and%20Matrix%20Theory%20(index).md#Unit%20Vectors)_ that are orthogonal to each other are _orthonormal_ to each other. Generally if we are dealing with vectors that are orthonormal to each other these vectors will also belong to a [basis set](linear%20basis) containing vectors that are all pair-wise orthonormal to each other. # Orthonormal functions [L2(I) space](L2(I)%20space.md) #MathematicalFoundations/Algebra/AbstractAlgebra/LinearAlgebra