Shift-invariant spaces LCA groups 6 Fibers 4 Frames 4 Range functions 4 Translation invariant spaces 4 Angle between subspaces 2 Approximation 2 Compressed sampling 2 Extra invariance 2 Frames of exponentials 2 Gramian operator 2 Multi-tiling 2 Multiplicatively invariant spaces 2 Paley-wiener spaces 2 Riesz bases of exponentials 2 Riesz basis 2 Sampling 2 Submulti- tiling 2 Zak transform 2