Separation in Point-Free Topology / by Jorge Picado, Aleš Pultr.

Format:

Book

Author/Creator:

Picado, Jorge, 1963- author.

Pultr, Aleš, author.

Language:

English

Subjects (All):

Algebra.

Algebra, Homological.

Topology.

Order, Lattices, Ordered Algebraic Structures.

Category Theory, Homological Algebra.

Local Subjects:

Order, Lattices, Ordered Algebraic Structures.

Category Theory, Homological Algebra.

Topology.

Physical Description:

1 online resource (XXI, 281 p. 40 illus., 1 illus. in color.)

Edition:

1st ed. 2021.

Place of Publication:

Cham : Springer International Publishing : Imprint: Birkhäuser, 2021.

Summary:

This book is the first systematic treatment of this area so far scattered in a vast number of articles. As in classical topology, concrete problems require restricting the (generalized point-free) spaces by various conditions playing the roles of classical separation axioms. These are typically formulated in the language of points; but in the point-free context one has either suitable translations, parallels, or satisfactory replacements. The interrelations of separation type conditions, their merits, advantages and disadvantages, and consequences are discussed. Highlights of the book include a treatment of the merits and consequences of subfitness, various approaches to the Hausdorff's axiom, and normality type axioms. Global treatment of the separation conditions put them in a new perspective, and, a.o., gave some of them unexpected importance. The text contains a lot of quite recent results; the reader will see the directions the area is taking, and may find inspiration for her/his further work. The book will be of use for researchers already active in the area, but also for those interested in this growing field (sometimes even penetrating into some parts of theoretical computer science), for graduate and PhD students, and others. For the reader's convenience, the text is supplemented with an Appendix containing necessary background on posets, frames and locales.

Contents:

Introduction

Separation in spaces

Subfitness, and basics of fitness

Summarizing low separation

Regularity and fitness

Complete regularity

Normality

Scatteredness. Joins of closed sublocales

Subfit, fit, open and complete

Appendix.

ISBN:

3-030-53479-0