𝔖 Bobbio Scriptorium
✦   LIBER   ✦

On summability of bilinear operators

✍ Scribed by Daniel Carando; Verónica Dimant


Publisher
John Wiley and Sons
Year
2003
Tongue
English
Weight
155 KB
Volume
259
Category
Article
ISSN
0025-584X

No coin nor oath required. For personal study only.

✦ Synopsis


Abstract

We study some properties of strongly and absolutely p‐summing bilinear operators. We show that Hilbert‐Schmidt bilinear mappings are both strongly and absolutely p‐summing, for every p ≥ 1. Giving an example of a strongly 1‐summing bilinear mapping which fails to be weakly compact, we answer a question posed in [6]. We prove that, as in the linear case, every bilinear operator from ℒ︁~∞~‐spaces to an ℒ︁~2~‐space is absolutely 2‐summing. (© 2003 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)


📜 SIMILAR VOLUMES


Factorization of Completely Bounded Bili
✍ Allan M Sinclair; Roger R Smith 📂 Article 📅 1998 🏛 Elsevier Science 🌐 English ⚖ 345 KB

A completely bounded bilinear operator ,: M\_M Ä M on a von Neumann algebra M is said to have a factorization in M if there exist completely bounded linear operators j , % j : M Ä M such that ,(x, y)= : where convergence of the sum is made precise below. The main result of the paper is that all com

On Scales of Summability Methods
✍ Rüdiger Kiesel 📂 Article 📅 1995 🏛 John Wiley and Sons 🌐 English ⚖ 402 KB

In this paper we consider generalized Norlund methods (Nap), a > -1, power series methods (J,) and the iteration product of two such methods. A particular case is that of the Cesaro means (C,) with corresponding power series method (A), i.e., Abel's method. We obtain generalizations of inclusion, an

On the nonomnipotence of regular summabi
✍ S Haber; O Shisha 📂 Article 📅 1978 🏛 Elsevier Science 🌐 English ⚖ 74 KB

Let T = (tm,J (m, n = I, 2 ,...; all t,,, , > 0) define a regular summability method. It is known [l] that there is a bounded divergent sequence whose T-transform is also divergent. Here we point out that one can say more: namely, that for some real, bounded, divergent sequence {a,}~=, , its T-trans