Characterization of regularity via variational stability of alternating projections sequences

Francesco Battistoni, Aris Daniilidis, Carlo Alberto De Bernardi +1

The notion of regular pair $(A,B)$ for two nonempty closed convex subsets $A$ and~$B$ of a Hilbert space $\H$ was introduced by Borwein and Bauschke in 1993 to ensure convergence (…