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k-spaces and duals of non-archimedean metrizable locally convex spaces

  • Maria Cristina Perez-Garcia EMAIL logo
Published/Copyright: July 4, 2018

Abstract

The main purpose of this paper is to investigate the non-archimedean counterpart of the classical result stating that the dual of a real or complex metrizable locally convex space, equipped with the locally convex topology of uniform convergence on compact sets, belongs to the topological category formed by the k-spaces. We prove that this counterpart holds when the non-archimedean valued base field 𝕂 is locally compact, but fails for any non-locally compact 𝕂. Here we deal with a topological subcategory, the one formed by the k0-spaces, the adequate non-archimedean substitutes for k-spaces. As a product, we complete some of the achievements on the non-archimedean Banach–Dieudonné Theorem presented in [C. Perez-Garcia and W. H. Schikhof, The p-adic Banach–Dieudonné theorem and semi-compact inductive limits, p-adic Functional Analysis (Poznań 1998), Lecture Notes Pure Appl. Math. 207, Dekker, New York 1999, 295–307]. Also, we use our results to construct in a simple way natural examples of k-spaces (which are also k0-spaces) whose products are not k0-spaces. This in turn improves the, rather involved, example given in [C. Perez-Garcia and W. H. Schikhof, Locally Convex Spaces over non-Archimedean Valued Fields, Cambridge Stud. Adv. Math. 119, Cambridge University Press, Cambridge, 2010] of two k0-spaces whose product is not a k0-space. Our theory covers an important class of non-archimedean Fréchet spaces, the Köthe sequence spaces, which have a relevant influence on applications such as the definition of a non-archimedean Laplace and Fourier transform.

MSC 2010: 46S10; 54D50

Communicated by Jörg Brüdern


Award Identifier / Grant number: MTM2013-45643-C2-2-P

Funding statement: Research partially supported by Ministerio de EconomĂ­a y Competitividad, Grant MTM2013-45643-C2-2-P.

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Received: 2016-03-22
Revised: 2016-11-03
Published Online: 2018-07-04
Published in Print: 2018-09-01

© 2018 Walter de Gruyter GmbH, Berlin/Boston

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