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Our main result is that any topological algebra based on a Boolean space is the extended Stone dual space of a certain associated Boolean algebra with additional operations. A particular case of this result is that the profinite completion…

Logic · Mathematics 2013-09-13 Mai Gehrke

In three recaent papers of G. Dimov, many Stone-type duality theorems for the category of locally compact Hausdorff spaces and continuous maps and some of its subcategories were proved. The dual objects in all these theorems are the local…

General Topology · Mathematics 2014-12-09 Elza Ivanova-Dimova

By de Vries duality, the category of compact Hausdorff spaces is dually equivalent to the category of de Vries algebras. In our recent article, we have extended de Vries duality to completely regular spaces by generalizing de Vries algebras…

General Topology · Mathematics 2018-04-13 Guram Bezhanishvili , Patrick J. Morandi , Bruce Olberding

The term Stone-type duality often refers to a dual equivalence between a category of lattices or other partially ordered structures on one side and a category of topological structures on the other. This paper is part of a larger endeavour…

Category Theory · Mathematics 2020-09-07 Dirk Hofmann , Pedro Nora

ASD (Abstract Stone Duality) is a re-axiomatisation of general topology in which the topology on a space is treated, not as an infinitary lattice, but as an exponential object of the same category as the original space, with an associated…

General Topology · Mathematics 2019-03-14 Paul Taylor

This is the last in a series of three notes on an investigation into core regular double Stone algebras, CRDSA, which are meant to be read in order. This note ends our initial investigation of duality for CRDSA through bi-topological…

Rings and Algebras · Mathematics 2018-09-25 Daniel J. Clouse

We introduce a notion of ``$n$-dual'' to a simplicial vector space for $n\ge 0$. Coming with it, there is a canonical pairing, which we show to be non-degenerate up to homotopy for homotopy $n$-types. As a result this notion of duality is…

Differential Geometry · Mathematics 2025-12-01 Stefano Ronchi , Chenchang Zhu

Stone duality establishes a contravariant equivalence between the category of Boolean algebras and the category of compact, Hausdorff, totally disconnected topological spaces (Stone spaces). These spaces are precisely the profinite spaces…

General Topology · Mathematics 2026-01-15 J. R. Pérez-Buendía

It has been known since the work of Duskin and Pelletier four decades ago that KH^op, the category opposite to compact Hausdorff spaces and continuous maps, is monadic over the category of sets. It follows that KH^op is equivalent to a…

Logic · Mathematics 2020-11-19 Vincenzo Marra , Luca Reggio

In the absence of the Axiom of Choice, necessary and sufficient conditions for a locally compact Hausdorff space to have all non-empty second-countable compact Hausdorff spaces as remainders are given in $\mathbf{ZF}$. Among other…

General Topology · Mathematics 2020-09-22 Kyriakos Keremedis , Eleftherios Tachtsis , Eliza Wajch

We prove three new versions of Stone Duality. The main version is the following: the category of Kolmogorov locally small spaces and bounded continuous mappings is equivalent to the category of spectral spaces with decent lumps and with…

General Topology · Mathematics 2021-09-28 Artur Piękosz

Compact metric spaces form an important class of metric spaces, but the category that they define lacks many important properties such as completeness and cocompleteness. In recent studies of "metric domain theory" and Stone-type dualities,…

Category Theory · Mathematics 2025-01-15 Marco Abbadini , Dirk Hofmann

We present theoretical properties of the space of metric pairs equipped with the Gromov--Hausdorff distance. First, we establish the classical metric separability and the geometric geodesicity of this space. Second, we prove an…

Metric Geometry · Mathematics 2026-02-06 Andrés Ahumada Gómez , Mauricio Che , Manuel Cuerno

We extend Stone duality to a fully faithful embedding of condensed sets into fpqc sheaves over an arbitrary field, which preserves colimits and finite limits. We study how familiar notions from condensed mathematics/topology and algebraic…

Algebraic Geometry · Mathematics 2024-01-08 Rok Gregoric

From a logical point of view, Stone duality for Boolean algebras relates theories in classical propositional logic and their collections of models. The theories can be seen as presentations of Boolean algebras, and the collections of models…

Logic · Mathematics 2013-07-01 Steve Awodey , Henrik Forssell

We unify several extensions of the classic Stone duality due to Gr\"atzer, Hoffman-Lawson and Jung-S\"underhauf. Specifically we show that U-bases of locally compact sober spaces are dual to <-distributive v-predomains, where < is a…

General Topology · Mathematics 2020-02-25 Tristan Bice

It is a classic result in modal logic that the category of modal algebras is dually equivalent to the category of descriptive frames. The latter are Kripke frames equipped with a Stone topology such that the binary relation is continuous.…

General Topology · Mathematics 2020-08-14 Guram Bezhanishvili , Luca Carai , Patrick Morandi

We prove a new duality theorem for the category of precontact algebras which implies the Stone Duality Theorem, its connected version obtained in arXiv:1508.02220v3, 1-44 (to appear in Topology Appl.), the recent duality theorems of…

General Topology · Mathematics 2016-03-04 G. Dimov , E. Ivanova-Dimova , D. Vakarelov

We establish two duality theorems which refine the classical Stone duality between generalized Boolean algebras and locally compact Boolean spaces. In the first theorem we prove that the category of left-handed skew Boolean algebras whose…

Rings and Algebras · Mathematics 2015-03-18 Ganna Kudryavtseva

We revisit the problem of Stone duality for lattices with various quasioperators, first studied in [14], presenting a fresh duality result. The new result is an improvement over that of [14] in two important respects. First, the…

Logic · Mathematics 2024-12-22 Chrysafis Hartonas