5 papers
Graphs of group actions and group actions on trees
Florian Lehner, Christian Lindorfer, Rögnvaldur G. Möller +1
Bass-Serre theory provides a powerful framework for studying group actions on trees. While extremely effective for structural questions in group theory, it is less suited to the sy…
Notes on hyperbolic branching Brownian motion
Wolfgang Woess
Euclidean branching Brownian motion (BBM) has been intensively studied during many decades by renowned researchers. BBM on hyperbolic space has received less attention. A profound…
Some old and basic facts about random walks on groups
Wolfgang Woess
This note contains old instead of new results about random walks on groups, which may serve as a small supplement to the author's monograph ``Random Walks on Infinite Graphs and Gr…
Diffusion on homogeneous ultrametric spaces: the contributions of Alessandro Figà -Talamanca
Wolfgang Woess
Alessandro Figà -Talamanca (1938-2023) was an influential Italian mathematician, scientific leader of the Italian group of harmonic analysis for many years. Since the late 1970ies,…
The spectra of graph substitutions
Thomas Hirschler, Wolfgang Woess
Let and be finite connected graphs without loops. We assume that has two distinguished vertices and an automorphism which exchanges and~.…