Periodicity refers to inducing periodic patterns within the behaviour of the process.

These shapes with five-fold symmetry repeat periodically, although the space between them contain other shapes that do not have a periodic pattern.

As with wallpaper groups, a frieze group is often visualised by a simple periodic pattern in the category concerned.

It was at that time that atmospheric greenhouse gas concentrations stopped following the periodic pattern of the Milankovitch cycles.

Fourier profilometry is a method for measuring profiles using distortions in periodic patterns.

He showed how a diffusing chemical could spontaneously self-organize to give a periodic pattern of peaks and troughs.

It is an array of points in a periodic multidimensional pattern.

However, the latter tools are restricted to producing periodic patterns only.

A basic feature of musical rhythms is represented by periodic temporal patterns.

When the coefficients settle into having a periodic pattern of signs then use a test proposed by Mercer and Roberts.