Shift-invariant space Range functions 6 Translation invariant space 6 Fiber spaces 4 LCA groups 4 Approximation problems 2 Closed subspace 2 Dimension function 2 Extra time-frequency shift invariance 2 Extra-invariance 2 Fiber space 2 Fibers 2 Frames 2 Functional analysis 2 Gabor space 2 Gramian operator 2 Harmonic analysis 2 Paley–Wiener spaces 2 Parseval frames 2 Primary 2 Range function 2 Riesz basis 2 Sampling 2 Secondary 2 Shift invariant spaces 2 Time-frequency analysis 2 Translation invariants 2 Translation-invariant space 2 Wiener spaces 2 Window functions 2