Orthonormal Functions
A pair of functions 
and 
are orthonormal if they are Orthogonal and eachnormalized. These two conditions can be succinctly written as
where
is a Weighting Function and 
is the Kronecker Delta.See also Orthogonal Polynomials- Triaugmented Hexagonal Prism
- Triaugmented Triangular Prism
- Triaugmented Truncated Dodecahedron
- Triaxial Ellipsoid
- Tribar
- Tribonacci Number
- Tribox
- Trichotomy Law
- Tricolorable
- Tricomi Function
- Tricuspoid
- Tricylinder
- Tridecagon
- Trident
- Trident of Descartes
- Trident of Newton
- Tridiagonal Matrix
- Tridiminished Icosahedron
- Tridiminished Rhombicosidodecahedron
- Tridyakis Icosahedron
- Trifolium
- Trigon
- Trigonal Dipyramid
- Trigonal Dodecahedron
- Trigonometric Functions