We apply a new notion of angle between projections to deduce criteria for uniform convergence results of the alternating projections method under several different settings: averaged projections, cyclic products, quasiperiodic products and random products.
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Oppenheim, I. Angle criteria for uniform convergence of averaged projections and cyclic or random products of projections. Isr. J. Math. 223, 343–362 (2018). https://doi.org/10.1007/s11856-017-1618-4