The basic higher order commutator theorem is formulated for the real interpolation methods associated with the quasi-power parameters, that is, the function spaces on which Hardy inequalities are valid. This theorem unifies and extends various results given by Cwikel, Jawerth, Milman, Rochberg, and others, and incorporates some results of Kalton to the context of commutator estimates for the re...

The aim of the present paper is to introduce the asymmetric locally convex spaces and to prove some basic properties. Among these I do mention the analogs of the EidelheitTuckey separation theorems, of the Alaoglu-Bourbaki theorem on the weak compactness of the polar of a neighborhood of 0, and a Krein-Milman-type theorem. These results extend those obtained by Garcı́a-Raffi et al. (2003) and Co...

We give a general inequality for Bergman kernels of spaces defined by convex weights in $\C^n$. also discuss how this can be used Nazarov's proof the Bourgain-Milman theorem, as substitute H\"ormander's estimates $\dbar$-equation.

In 1980 D. Amir and V. D. Milman gave a quantitative finitedimensional version of Krivine’s theorem. We extend their version of the Krivine’s theorem to the quasi-convex setting and provide a quantitative version for p-convex norms. Recently, a number of results of the Local Theory have been extended to the quasi-normed spaces. There are several works [Kal1, Kal2, D, GL, KT, GK, BBP1, BBP2, M2]...

The present review paper provides recent results on convexity and its applications to the constrained extension of linear operators, motivated by existence subgradients continuous convex Markov moment problem related approximation using Krein–Milman theorem, optimization, polynomial unbounded subsets. In many cases, Mazur–Orlicz theorem also leads operators as solutions. common point all these ...

1. Topological Vector Spaces 1 1.1. The Krein-Milman theorem 7 2. Banach Algebras 11 2.1. Commutative Banach algebras 14 2.2. ∗–Algebras (over complexes) 17 2.3. Problems on Banach algebras 20 3. The Spectral Theorem 21 3.1. Problems on the Spectral Theorem (Multiplication Operator Form) 26 3.2. Integration with respect to a Projection Valued Measure 27 3.3. The Functional Calculus 34 4. Unboun...

As a corollary of the main resu!t of this paper (Theorem i) we show that if ~ i~ not S-dense, then I~[ ~< 1~ s [. This contains as special cases the results of Sauer [4] and Perles and Shelab [5], and of Karpovski and Milman [3]. Before stating Theorem l, we need one more definition; ~ c 3~ is monotone if f ¢ ~ , g e 3 ~ and f ~ g imply g ¢ ~ . Note ~.hat ~ s is monotone and that a monotone fam...