Shift invariant spaces Accuracy 4 Dilation equation 4 Dilation matrix 4 Multidimensional wavelets 4 Multiwavelets 4 Refinable distributions 4 Refinable functions 4 Refinement equation 4 Wavelets 4 Approximation problems 2 Closed subspace 2 Determining sets 2 Extra-invariance 2 Frames 2 Functional analysis 2 Harmonic analysis 2 Paley–Wiener spaces 2 Parseval frames 2 Primary 2 Sampling 2 Sampling spaces 2 Secondary 2 Shift-invariant space 2 Translation invariants 2 Wiener spaces 2