shifting theorem
shifting theorem
[′shift·iŋ ‚thir·əm] (mathematics)
If the Fourier transform of ƒ(t) is F (x), then the Fourier transform of ƒ(t-a) is exp (iax) F (x).
If the Laplace transform of ƒ(x) is F (y), then the Laplace transform of ƒ(x-a) is exp (-ay) F (y).
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.