Contact and group

Research

Project overview
Topological infinite graph theory
Infinite matroids
Graphs and groups
Infinite graphs (general)
Hyperbolic graphs and boundaries
Infinite electrical networks and flows
Graph minors, tree-structure and connectivity

Lehre

AG – Forschungsseminar
Vorlesung Lineare Algebra
Veranstaltungen der Diskreten Mathematik

Prüfungen bei mir
Tipps für Seminarvorträge
Tipps zur Studienplanung

Books

Graph Theory
Graphentheorie
Graph Decompositions
Infinite graphs surveys

Papers

Recent papers
All my papers by field

Some thoughts on copyright

Biographical information