periodic function
function that repeats its values in regular intervals or periods
trigonometric function
function of an angle
periodic sequence
sequence for which the same terms are repeated over and over
Dirichlet kernel
Concept in mathematical analysis
trigonometric polynomial
mathematical function
fractional part
excess beyond the integer part of a number
Crenel function
periodic discontinuous function P(x) defined as 1 for x belonging to a given interval and 0 outside of it
molecular vibrations
periodic motion of the atoms of a molecule
elliptic function
class of mathematical functions