pdf | 34.22 MB | English | Isbn:9789811232121 | Author: Szymon Dolecki | Year: 2024
About ebook:
ROYAL ROAD TO TOPOLOGY, A: CONVERGENCE OF FILTERS: Convergence of Filters Topological spaces are a special case of convergence spaces. This textbook introduces topology within a broader context of convergence theory. The title alludes to advantages of the present approach, which is more gratifying than many traditional ones: you travel more comfortably through mathematical landscapes and you see more.
The book is addressed both to those who wish to learn topology and to those who, being already knowledgeable about topology, are curious to review it from a different perspective, which goes well beyond the traditional knowledge.
Usual topics of classic courses of set-theoretic topology are treated at an early stage of the book — from a viewpoint of convergence of filters, but in a rather elementary way. Later on, most of these facts reappear as simple consequences of more advanced aspects of convergence theory.
The mentioned virtues of the approach stem from the fact that the class of convergences is closed under several natural, essential operations, under which the class of topologies is not! Accordingly, convergence theory complements topology like the field of complex numbers algebraically completes the field of real numbers.
Convergence theory is intuitive and operational because of appropriate level of its abstraction, general enough to grasp the underlying laws, but not too much in order not to lose intuitive appeal.
Contents:
About the Author
Preface
Preliminaries
From Convergence of Sequences to the Concept of Filter
Convergence of Filters
Continuity
Families of Sets
Pretopologies
Topological Structures
Adherences, Covers, and Compactness
Topological Concepts
Functional Study of Topologies
Functional Partitions and Metrization
Compact Topologies
Connected and Disconnected Topologies
Extensions and Compactifications
Uniform Structures
Sequentially Founded Convergences
Structural Aspects
Fundamental Classes
Diagonality and Regularity
Compactness
Mixed Properties
Implementations and Refinements
Completeness
Spaces of Maps
Duality
Modified Duality
Outline of Principles
Category Theoretic Perspective
Postface
Bibliography
List of Symbols
Index
Readership: Graduate students of mathematics, Academia (topology, analysis).
Key Features:
The framework of convergence theory is easier, more powerful and far-reaching than that of general topology, thanks to an appropriate level of abstraction, enabling us to see the things with inhanced clarity
Convergence theory is for topology, what complex numbers are for real numbers
Several themes of convergence theory have been developed by the author and his collaborators
Thus this book would offer the state of the art of the field