Below is the ascii version of the abstract for 14-56. The html version should be ready soon.

Vitali Vougalter
Solvability conditions for some non Fredholm operators in higher dimensions
(87K, pdf)

ABSTRACT.  We establish solvability in H^{2}(R^{d}) of certain linear elliptic equations involving the sums of second order differential operators 
without Fredholm property using the spectral and scattering theory for Schroedinger type operators, generalizing the results obtained in the earlier work.