(mathematics) The result that the Fourier transform is unitary; loosely, that the sum (or integral) of the square of a function is equal to the sum (or integral) of the square of its transform.

Military rule of a country, often in collusion with the elite and business classes.

One of 64 parishes in Louisiana, United States, the equivalent of a county in other US states. Parish seat: Edgard.

plural of ribbon map