A note on the spaces and .
A Note on the Topology Associated with a Local Convex Space
A note on the topology associated with a locally convex space.
A Note on Vanishing of the Factor Ext for Köthe Spaces.
A note on -multiplier convergent series
A Potential-Theoretic Approach to Parallel Addition.
A projection property and weak sequential completeness of alfa-duals.
A projective description of the simple scalar function space.
A proof of the Grünbaum conjecture
Let V be an n-dimensional real Banach space and let λ(V) denote its absolute projection constant. For any N ∈ N with N ≥ n define , λₙ = supλ(V): dim(V) = n. A well-known Grünbaum conjecture [Trans. Amer. Math. Soc. 95 (1960)] says that λ₂ = 4/3. König and Tomczak-Jaegermann [J. Funct. Anal. 119 (1994)] made an attempt to prove this conjecture. Unfortunately, their Proposition 3.1, used in the proof, is incorrect. In this paper a complete proof of the Grünbaum conjecture is presented
A proof of the Markov-Kakutani fixed point theorem via the Hahn-Banach theorem.
A Property of Locally Convex Baire Spaces.
A propos d'un probleme de Klee sur la seperation de plusieurs ensembles.
À propos d'une question posée par V. Klee
Nous répondons par la négative à une question posée par Klee (Mathematical Note no 599, Boeing Scientific Research Laboratories, p.29).
A quantitative refinement of the closed graph theorem
A quantitative version of Krein's theorem.
A quantitative version of Krein's Theorem on convex hulls of weak compact sets is proved. Some applications to weakly compactly generated Banach spaces are given.
A quick and simple proof of Sherman's theorem on order in -algebras.
A Re-Examination of the Roberts Example of a Compact Convex Set Without Extreme Points.
A refinement of the Helson-Szegö theorem and the determination of the extremal measures
A remark on a Banach-Steinhaus theorem of Narang
A remark on a problem of Klee