stripes
Everyone has a common sense idea about stripes (or strip).But we must be precisely about stripes and define them in a mathematical way. 

stripe


stripecourse D The successive changes of direction are ‘the course of the stripe’. D A stripecourse either has an open or a closed nature. In the latter case it is a ‘circuit’. 

stripecircuit
D If a stripe is a circuit, its shape has an outside and an inside. D> Its inside has the form of a point, a line, or a system of lines. In the latter case (some of) these lines can enclose an area. 

striped pattern
D A striped pattern is a pattern composed of stripes which interlock. 