On Extension and Continuity of p–Additive Functions
✍ Scribed by Joanna Szczawińska
- Publisher
- John Wiley and Sons
- Year
- 2000
- Tongue
- English
- Weight
- 168 KB
- Volume
- 216
- Category
- Article
- ISSN
- 0025-584X
No coin nor oath required. For personal study only.
✦ Synopsis
In this paper we prove some properties of p -additive functions as well as p -additive set -valued functions.
We start with some definitions. Definition 2.1. A set C ⊆ X (where X is a vector space) is said to be a convex cone if and only if C + C ⊆ C and t C ⊆ C for all t ∈ (0, ∞). Definition 2.2. Let X 1 , . . . , X p , Z be real vector spaces and C 1 , . . . , C p be convex cones in X 1 , . . . , X p , respectively. We say that a function f :
and only if f is additive with respect to each variable.
📜 SIMILAR VOLUMES
Let G be a locally compact commutative group and let g and h be positive definite functions on G, which are not identically zero. We show that continuity of gh implies the existence of a character y of Gd (the discrete version of G) such that yg and y h are continuous. As corollary we get a special
## Abstract In this paper we show that the Aron‐Berner type extension of polynomials preserves the __P__‐continuity property. To this end we introduce a new version of Goldstine's Theorem for locally complemented subspaces. © 2011 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim
Let R be a linear subset of the space B(H) of bounded operators on a Hilbert space H with an orthonormal basis. It is shown constructively that if the unit ball of R is weak-operator totally bounded, then an ultraweakly continuous linear functional on R extends to one on B(H), and the extended funct