Rectangular Function: Rectangle, Boxcar Function, Step Heaviside Sinc Triangular Function

Singularity Function: Dirac Delta Function, Heaviside Step Ramp Function

Triangular Function: Rectangular Function, Convolution, Pulse Code Modulation, Bartlett Window, Signal Processing

Sombrero Function: Polar Coordinate, Sinc Function, Sombrero, Image Processing

Step Function: Function (Mathematics), Real Number, Linear Combination, Indicator