This is an introductory textbook on general and algebraic topology, aimed at anyone with a basic knowledge of calculus and linear algebra. It provides full proofs and includes many examples and exercises. The covered topics include: set theory and cardinal arithmetic; axiom of choice and Zorn's lemma; topological spaces and continuous functions; con- nectedness and compactness; Alexandrov compactification; quotient topol- ogies; countability and separation axioms; prebasis and Alexander's theorem; the Tychonoff theorem and paracompactness; complete metric spaces and function spaces; Baire spaces; homotopy of maps; the fundamental group; the van Kampen theorem; covering spaces; Brouwer and Borsuk's theorems; free groups and free product of groups and basic category theory. While it is very concrete at the beginning, abstract concepts are gradually introduced.

This second edition contains a new chapter with a topological introduction to sheaf cohomology and applications.It also corrects some inaccuracies and some additional exercises are proposed.

The textbook is suitable for anyone needing a basic, comprehensive introduction to general and algebraic topology and its applications.

Provides a comprehensive treatment of the basic theory and of some complementary topics Contains lots of exercises, of various difficulty level Contains an original topological approach to sheaf cohomology

Autorentext
Professor Marco Manetti was born in 1966. He is full professor of geometry at the Sapienza University of Roma, Italy (since 2001). His research interests involve algebraic geometry, deformation theory, homotopical algebra and higher operations in geometry. He is the author of the book "Topologia", Springer UTX (2008).

Inhalt
1 Geometrical introduction to topology.- 2 Sets.- 3 Topological structures.- 4 Connectedness and compactness.- 5 Topological quotients.- 6 Sequences.- 7 Manifolds, infinite products and paracompactness.- 8 More topics in general topology.- 9) Intermezzo.- 10 Homotopy.- 11 The fundamental group.- 12 Covering spaces.- 13 Monodromy.- 14 van Kampen's theorem.- 15 A topological view of sheaf cohomology.- 16 Selected topics in algebraic topology.- 17 Hints and solutions.