Harmonic maps to buildings and singular perturbation theory

L Katzarkov, A Noll, P Pandit, C Simpson - … in Mathematical Physics, 2015 - Springer
The notion of a (uni) versal building associated with a point in the Hitchin base is introduced.
The universal building is a building equipped with a harmonic map from the universal cover …

Flatmates and the bounded cohomology of algebraic groups

N Monod - arXiv preprint arXiv:2407.01709, 2024 - arxiv.org
For all algebraic groups over non-Archimedean local fields, the bounded cohomology
vanishes. This follows from the corresponding statement for automorphism groups of Bruhat …

Limits of cubic differentials and buildings

J Loftin, A Tamburelli, M Wolf - arXiv preprint arXiv:2208.07532, 2022 - arxiv.org
In the Labourie-Loftin parametrization of the Hitchin component of surface group
representations into SL (3, R), we prove an asymptotic formula for holonomy along rays in …

Buildings, valuated matroids, and tropical linear spaces

L Battistella, K Kühn, A Kuhrs… - Journal of the London …, 2024 - Wiley Online Library
Abstract Affine Bruhat–Tits buildings are geometric spaces extracting the combinatorics of
algebraic groups. The building of PGL PGL parameterizes flags of subspaces/lattices in or …

Distances on a masure (affine ordered hovel)

A Hébert - arXiv preprint arXiv:1611.06105, 2016 - arxiv.org
A masure (aka affine ordered hovel) I is a generalization of the Bruhat-Tits building that is
associated to a split Kac-Moody group G over a non-archimedean local field. This is a union …

Polyhedral compactifications, I

C Ciobotaru, L Kramer, P Schwer - Advances in Geometry, 2023 - degruyter.com
In this work we describe horofunction compactifications of metric spaces and finite-
dimensional real vector spaces through asymmetric metrics and asymmetric polyhedral …

Quantum Ergodicity on Bruhat-Tits Buildings

C Peterson - 2023 - deepblue.lib.umich.edu
We study eigenfunctions of the spherical Hecke algebra acting on L^ 2 (Gamma_n
backslash G/K) where G= PGL (3, F) with F a non-archimedean local field of characteristic …

Semialgebraic groups and generalized affine buildings

R Appenzeller - arXiv preprint arXiv:2407.20406, 2024 - arxiv.org
We develop the theory of algebraic groups over real closed fields and apply the results to
construct a geometric object $\mathcal {B} $ and to prove that $\mathcal {B} $ is an affine …

Study of masures and of their applications in arithmetic

A Hébert - 2018 - hal.science
Masures were introduced in 2008 by Gaussent and Rousseau in order to study Kac-Moody
groups over local fields. They generalize Bruhat-Tits buildings. In this thesis, we study the …

Quantum ergodicity on the Bruhat-Tits building for in the Benjamini-Schramm limit

C Peterson - arXiv preprint arXiv:2304.08641, 2023 - arxiv.org
We study joint eigenfunctions of the spherical Hecke algebra acting on $ L^ 2
(\Gamma_n\backslash G/K) $ where $ G=\text {PGL}(3, F) $ with $ F $ a non-archimedean …