————————————————————- Algebraic and Geometric Topology. Part 1 1  Extension and lifting problems 1.1  The language of homotopy theory 1.2  The identity map extension problem 1.3  The identity map lifting problem 2  Fundamental groups and coverings 2.1  Paths, loops, and the fundamental group 2.2  Coverings and their automorphism groups 2.3  Cayley ( more… )

Real Algebras and Topology