On 2-strong homomorphisms and 2-normed hypersets in hypervector spaces.
On a class of convex sets
On best simultaneous approximation.
On Certain Topologies on a Vector Space.
On Farkas-type theorems
On measures of noncompactness in general topological vector spaces
On norms and subsets of linear spaces
On Schwartz Spaces and Mackey Convergence
On semi-inner product spaces, II
On some ergodic properties for continuous and affine functions
Two problems posed by Choquet and Foias are solved:(i) Let be a positive linear operator on the space of continuous real-valued functions on a compact Hausdorff space . It is shown that if converges pointwise to a continuous limit, then the convergence is uniform on .(ii) An example is given of a Choquet simplex and a positive linear operator on the space of continuous affine real-valued functions on , such thatfor each in , but does not converge to 0.
On some properties of hyperconvex spaces.
On subdifferential calculus and duality in non-convex optimization
On the Permanence of the Hahn-Banach Property in Bornology