When quoting this document, please refer to the following
DOI: 10.4230/LIPIcs.CSL.2013.500
URN: urn:nbn:de:0030-drops-42168
URL: https://drops.dagstuhl.de/opus/volltexte/2013/4216/
 Go to the corresponding LIPIcs Volume Portal

### Categorical Duality Theory: With Applications to Domains, Convexity, and the Distribution Monad

 pdf-format:

### Abstract

Utilising and expanding concepts from categorical topology and algebra, we contrive a moderately general theory of dualities between algebraic, point-free spaces and set-theoretical, point-set spaces, which encompasses infinitary Stone dualities, such as the well-known duality between frames (aka. locales) and topological spaces, and a duality between \sigma-complete Boolean algebras and measurable spaces, as well as the classic finitary Stone, Gelfand, and Pontryagin dualities. Among different applications of our theory, we focus upon domain-convexity duality in particular: from the theory we derive a duality between Scott's continuous lattices and convexity spaces, and exploit the resulting insights to identify intrinsically the dual equivalence part of a dual adjunction for algebras of the distribution monad; the dual adjunction was uncovered by Bart Jacobs, but with no characterisation of the induced equivalence, which we do give here. In the Appendix, we place categorical duality in a wider context, and elucidate philosophical underpinnings of duality.

### BibTeX - Entry

@InProceedings{maruyama:LIPIcs:2013:4216,
author =	{Yoshihiro Maruyama},
title =	{{Categorical Duality Theory: With Applications to Domains, Convexity, and the Distribution Monad}},
booktitle =	{Computer Science Logic 2013 (CSL 2013)},
pages =	{500--520},
series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
ISBN =	{978-3-939897-60-6},
ISSN =	{1868-8969},
year =	{2013},
volume =	{23},
editor =	{Simona Ronchi Della Rocca},
publisher =	{Schloss Dagstuhl--Leibniz-Zentrum fuer Informatik},