The ∂ -approach to monochromatic inverse scattering in three dimensions

We discuss a method for monochromatic inverse scattering in three dimensions of [Novikov in Int. Math. Res. Papers 2005(6):287-349, [2005]] and implemented numerically in [Alekseenko et al. in Acoust. J. 54(3), [2008]]. This method is obtained as a development of the ∥ -approach to inverse scattering at fixed energy in dimension d≥3 of [Beals and Coifman in Proc. Symp. Pure Math. 43:45-70, [1985]] and [Henkin and Novikov in Usp. Mat. Nauk 42(3):93-152, [1987]] and involves, in particular, some results of [Faddeev in Itogi Nauki Tech. Sovr. Prob. Math. 3:93-180, [1965], [1974]] and some ideas of the soliton theory (in particular, some ideas going back to [Manakov in Usp. Mat. Nauk 31(5):245-246, [1976]] and [Dubrovin et al. in Dokl. Akad. Nauk SSSR 229:15-18, [1976]]). Also, our studies go back, in particular, to [Regge in Nuovo Cimento 14:951-976, [1959]]. This article is an extended version of the talk given at International Conference in Mathematics in honor of G. Henkin at the occasion of his 65th birthday.