Skip to main content

Research Repository

Advanced Search

Abstract Swiss cheese space and classicalisation of Swiss cheeses

Feinstein, Joel; Morley, S.; Yang, H.

Authors

S. Morley

H. Yang



Abstract

Swiss cheese sets are compact subsets of the complex plane obtained by deleting a sequence of open disks from a closed disk. Such sets have provided numerous counterexamples in the theory of uniform algebras. In this paper, we introduce a topological space whose elements are what we call “abstract Swiss cheeses”. Working within this topological space, we show how to prove the existence of “classical” Swiss cheese sets (as discussed in [6]) with various desired properties. We first give a new proof of the Feinstein–Heath classicalisation theorem [6]. We then consider when it is possible to “classicalise” a Swiss cheese while leaving disks which lie outside a given region unchanged. We also consider sets obtained by deleting a sequence of open disks from a closed annulus, and we obtain an analogue of the Feinstein–Heath theorem for these sets. We then discuss regularity for certain uniform algebras. We conclude with an application of these techniques to obtain a classical Swiss cheese set which has the same properties as a non-classical example of O’Farrell.

Journal Article Type Article
Publication Date Jun 1, 2016
Journal Journal of Mathematical Analysis and Applications
Print ISSN 0022-247X
Electronic ISSN 0022-247X
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 438
Issue 1
Pages 119-141
APA6 Citation Feinstein, J., Morley, S., & Yang, H. (2016). Abstract Swiss cheese space and classicalisation of Swiss cheeses. Journal of Mathematical Analysis and Applications, 438(1), 119-141. https://doi.org/10.1016/j.jmaa.2016.02.004
DOI https://doi.org/10.1016/j.jmaa.2016.02.004
Keywords Swiss Cheeses, Rational Approximation, Uniform Algebras, Bounded Point Derivations, Regularity of R(X)
Publisher URL http://www.sciencedirect.com/science/article/pii/S0022247X16001232
Copyright Statement Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by/4.0

Files

1-s2.0-S0022247X16001232-main.pdf (638 Kb)
PDF

Copyright Statement
Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by/4.0





You might also like



Downloadable Citations

;