Banach Space Theory and its Applications : Proceedings of the First Romanian GDR Seminar Held at Bucharest Romania August 31 – September 6 1981 Isomorphisms of unitary matrix spaces Inf compact potentials and Banachic kernels On summability in conjugate Banach spaces Fixed points of nonexpansive mappings and Chebyshev centers in Banach spaces with norms of type (KK) Best approximation and intersections of balls Estimates for the Pettis integral in interpolation spaces with some applications Elementary equivalence of L1 preduals Some open problems in the nonlinear classification of Banach spaces M ideals related spaces and some approximation properties On Etcheberrys extended Milutin lemma Extreme points and an unusual Banach space Tensor products and nuclearity Linear operators in (F) spaces Local duality of ultraproducts of Banach lattices On the existence of spheres and dual spheres without gap points Problems in the classification of certain compact spaces Eigenvalue problems depending nonlinearly on the parameter The weak Radon Nikodym property in conjugate Banach spaces Order  continuous operators on Banach lattices The primariness of rearrangement invariant function p spaces 0<p1 A proposition of A. Grothendieck revisited Bounded operators in Banach lattices Generating topologies and quotients of injective operator ideals Sequences in Banach spaces The perfect M tensor product of perfect Banach lattices Intersecting balls in spaces of vector valued functions.