Trigonometric Series

A trigonometric series is a series of the form:

It is called a Fourier series if the terms and have the form:

where is an integrable function.

Read more about Trigonometric Series:  The Zeros of A Trigonometric Series, Zygmund's Book

Famous quotes containing the word series:

    I look on trade and every mechanical craft as education also. But let me discriminate what is precious herein. There is in each of these works an act of invention, an intellectual step, or short series of steps taken; that act or step is the spiritual act; all the rest is mere repetition of the same a thousand times.
    Ralph Waldo Emerson (1803–1882)