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Title Details:
Algebraic Topology
Authors: Tzermias, Pavlos
Zafiridou, Sophia
Subject: MATHEMATICS AND COMPUTER SCIENCE > MATHEMATICS > ALGEBRAIC TOPOLOGY > CLASSICAL TOPICS
MATHEMATICS AND COMPUTER SCIENCE > MATHEMATICS > ALGEBRAIC TOPOLOGY > HOMOLOGY AND COHOMOLOGY THEORIES
MATHEMATICS AND COMPUTER SCIENCE > MATHEMATICS > ALGEBRAIC TOPOLOGY > HOMOTOPY THEORY
MATHEMATICS AND COMPUTER SCIENCE > MATHEMATICS > ALGEBRAIC TOPOLOGY > HOMOTOPY GROUPS
MATHEMATICS AND COMPUTER SCIENCE > MATHEMATICS > GENERAL TOPOLOGY > BASIC CONSTRUCTIONS
MATHEMATICS AND COMPUTER SCIENCE > MATHEMATICS > TOPOLOGICAL GROUPS, LIE GROUPS > TOPOLOGICAL AND DIFFERENTIABLE ALGEBRAIC SYSTEMS
MATHEMATICS AND COMPUTER SCIENCE > MATHEMATICS > GROUP THEORY AND GENERALIZATIONS > SPECIAL ASPECTS OF INFINITE OR FINITE GROUPS
MATHEMATICS AND COMPUTER SCIENCE > MATHEMATICS > GROUP THEORY AND GENERALIZATIONS > CONNECTIONS WITH HOMOLOGICAL ALGEBRA AND CATEGORY THEORY
Keywords:
Quotient topology
Topological manifolds
Classification of compact surfaces
Group actions on spaces, even actions
Homotopy and relative homotopy of maps
Fundamental group
Homotopy equivalence
Contractibility
Deformation retractions
Coverings and liftings
Universal covering space
Automorphisms of coverings
Singular homology
Homology groups of spheres
Higher homotopy groups
Hurewicz Theorem
Seifert-Van Kampen Theorem
Calculations with generators and relations
Description:
Abstract:
The first chapter is a reminder of basic notions from General Topology. In the second chapter quotient spaces are studied, a concise introduction to topological manifolds is given and the classical classification of compact surfaces is presented. In the third chapter topological groups and group actions on topological spaces are studied, with emphasis on the useful notion of even actions. The fourth chapter is an introduction to homotopy of maps, fundamental groups of topological spaces and homotopy equivalence. In the fifth chapter simply connected spaces, contractible spaces, deformation retractions and strong deformation retractions are introduced and the proof that topological groups have abelian fundamental groups is given. The sixth and seventh chapters introduce coverings, liftings of maps and homotopies, the monodromy action, universal covering spaces, hierarchies and automorphisms of coverings, even actions and normal coverings. The eighth chapter introduces Singular Homology. Homology groups of topological spaces and homomorphisms induced by continuous maps are studied and the homotopy invariance of homology is proven. In the ninth chapter higher homotopy groups are introduced and the connection between homotopy and homology is presented via the Hurewicz Theorem. Also, using the Mayer-Vietoris sequence, the homology groups of spheres are calculated. In the tenth chapter, important theorems in Algebraic Topology are proven, namely Invariance of Dimension, the Hairy Ball Theorem and the Brouwer Fixed Point Theorem. The study of embeddings of spheres into spheres also establishes Invariance of Domain and the Jordan-Brouwer Theorem. The general Seifert-Van Kampen Theorem is stated and Grothendieck’s proof of a special case is given. The fundamental groups of compact surfaces are calculated, using basic tools from Combinatorial Group Theory. Finally, a concise reference is made to foundational issues, like the word problem, the isomorphism problem and the homeomorphism problem.
Linguistic Editors: Vasiliki, Tiraidi
Technical Editors: Karatzidis, Dimitrios
Type: Postgraduate textbook
Creation Date: 19-01-2024
Item Details:
ISBN 978-618-228-188-8
License: Attribution - NonCommercial - ShareAlike 4.0 International (CC BY-NC-SA 4.0)
DOI http://dx.doi.org/10.57713/kallipos-422
Handle http://hdl.handle.net/11419/12202
Bibliographic Reference: Tzermias, P., & Zafiridou, S. (2024). Algebraic Topology [Postgraduate textbook]. Kallipos, Open Academic Editions. https://dx.doi.org/10.57713/kallipos-422
Language: Greek
Consists of:
1. Elements of General Topology
2. Quotient spaces
3. Topological groups, group actions and orbit spaces
4. Fundamental groups
5. Contractible spaces
6. Covering spaces
7. Classification of coverings and automorphisms
8. Singular homology
9. Connecting homotopy and homology
10. Important Theorems in Algebraic Topology
Number of pages 200
Publication Origin: Kallipos, Open Academic Editions
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