ABSTRACT
Computation of projection π∗(t,W,X2) We need to find the v ∈ k that minimizes ‖v− t2‖2 subject to the constraints v∈C(W,X2), where t2 ∈k is given andC(W,X2) is defined in (4.9). Let e j ∈k have the jth element equal to one and the remaining elements all equal to zero.
