A unified treatment of some iterative algorithms in signal processing and image reconstruction

Let T be a (possibly nonlinear) continuous operator on Hilbert space . If, for some starting vector x , the orbit sequence { T k x , k = 0,1,...} converges, then the limit z is a fixed point of T ; that is, Tz = z . An operator N on a Hilbert space is nonexpansive (ne) if, for each x and y in , Even... View More