"Sociale wetenschappen (algemeen)" . . "Topologia algebraica" . . "Variétés à 3 dimensions." . . . . . "Topology and Combinatorics of 3-Manifolds" . "This book is a study of combinatorial structures of 3-mani- folds, especially Haken 3-manifolds. Specifically, it is concerned with Heegard graphs in Haken 3-manifolds, i.e., with graphs whose complements have a free fundamental group. These graphs always exist. They fix not only a combinatorial stucture but also a presentation for the fundamental group of the underlying 3-manifold. The starting point of the book is the result that the intersection of Heegard graphs with incompressible surfaces, or hierarchies of such surfaces, is very rigid. A number of finiteness results lead up to a ri- gidity theorem for Heegard graphs. The book is intended for graduate students and researchers in low-dimensional topolo- gy as well as combinatorial theory. It is self-contained and requires only a basic knowledge of the theory of 3-manifolds."@en . . "Llibres electrònics" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . "Electronic books"@en . . . . . . . . . . . . . . . . "Topology and combinatorics of 3-manifolds" . "Topology and combinatorics of 3-manifolds"@en . . "Topology and combinatorics of three-manifolds" . "Variété topologique de dimension 3." . . "Discrete wiskunde." . . "Variétés topologiques à 3 dimensions." . . "SpringerLink (Service en ligne)" . . "Variedades en dimensión tres." . . "Three-manifolds (Topology)" . . "Three-manifolds (Topology)." . "Topologija Topologija 3-mnogoterosti." . . "Dimension 3." . . "Manifolds and Cell Complexes (incl. Diff.Topology)" . . "Manifolds." . . "Varietats (Matemàtica)" . . . . "Mannigfaltigkeit." . . "Topologia" . . "Topologia." . "Varietats tridimensionals (Topologia)" . . "Mannigfaltigkeit Kombinatorik." . . "Kombinatorik Mannigfaltigkeit." . . "Group Theory and Generalizations." . . "Cell aggregation_xMathematics." . . "variété topologique." . . "Kombinatorik." . . "Matemàtica." . . "Algebraïsche topologie." . . "Mannigfaltigkeit Topologie." . . "Algebraic Topology." . . "graphe Heegard." . . "Topologie Mannigfaltigkeit." . . "Topologie." . .