... of equation 18.5. 26), then it can be shown thatthe convergence condition (18.5.22) is unmodified, and the iteration will convergeto minimize the quadratic functional (18.5 .6) subject to the ... Remote Sensing and IndirectMeasurements(Amsterdam: Elsevier). [3]Craig, I.J.D., and Brown, J.C. 1986,Inverse Problems in Astronomy(Bristol, U.K.: Adam Hilger).[4]Tikhonov, A.N., and Arsenin, ... functions uL and uU).(In this last case, the bounds might be related to an initial estimate and its error bars,e.g., u0(x) ± γσ(x),whereγis of order 1 or 2.) Notice that these, and similar,constraints...