Linear operators belonging to operator ideals (nuclear, \(p\)-summing, in the Schatten-von Neumann classes, etc.), Duality theory for topological vector spaces, duals of spaces of compact operators, completed injective tensor products, Radon-Nikodym property, spaces of vector-valued continuous functions, epsilon-product of locally convex spaces, generalized DF spaces, approximation property, Spaces of linear operators; topological tensor products; approximation properties, Tensor products in functional analysis, completed projective tensor product