Produkt mají v nabídce:
Topology II - Fuchs, D.B. a Viro, O.Ya.
Natural Group Structures on Sets of Homotopy Classes . Absolute Homotopy Groups . Local Systems of Homotopy Groups of a Topological Space . Relative Homotopy Groups . Bundles and Homotopy Groups . The Local System of Homotopy Groups of the Fibres of a Serre Bundle .
