Essert, Jan; Essert, Jan Martin: Buildings, group homology and lattices. 2010
Inhalt
- Introduction
- Main results
- Basic geometric concepts
- Buildings
- Coxeter complexes
- Coxeter groups
- Coxeter complexes
- Roots
- The canonical linear representation
- Spherical Coxeter complexes
- Affine Coxeter complexes
- Buildings
- Groups acting on buildings
- Examples of buildings and classical groups
- Generalised polygons
- The spherical buildings of type An and linear groups
- The spherical buildings of type Cn and unitary groups
- Two-dimensional affine buildings
- Group homology
- Spectral sequences
- The definition of spectral sequences
- The spectral sequence associated to a filtered chain complex
- The spectral sequence associated to a filtered topological space
- The spectral sequences associated to a double complex
- Equivariant homology
- The Lyndon/Hochschild-Serre spectral sequence
- Complexes of groups
- Small categories without loops
- Complexes of groups
- Developability and non-positive curvature
- Presentations by group actions
- Wagoner complexes
- The definition of Wagoner complexes
- Simple properties of Wagoner complexes
- The Steinberg group
- Homotopy groups of Wagoner complexes
- The connection to algebraic K-theory
- Affine Wagoner complexes
- Homological stability
- Relative spectral sequences
- Relative spectral sequences associated to tensor complexes
- The relative Lyndon/Hochschild-Serre spectral sequence
- The opposition complex and a relative spectral sequence
- Homological stability
- Lattices in buildings
- Lattices in automorphism groups of polyhedral complexes
- Complexes of groups with generalised polygons as local developments
- Lattices in buildings of type ~A2
- A general construction of panel-regular lattices in ~A2-buildings
- The classification of panel-regular lattices
- Lattices generated by cyclic Singer groups
- Spheres of radius two
- Lattices in buildings of type ~C2
- Lattices acting regularly on two types of panels
- Lattices acting regularly on one type of panel
- Property (T)
- Group homology of lattices
- Open problems
- Coxeter diagrams
- Bibliography
