A
Anders Karlsson
Researcher at University of Geneva
Publications - 73
Citations - 1448
Anders Karlsson is an academic researcher from University of Geneva. The author has contributed to research in topics: Ergodic theory & Metric space. The author has an hindex of 23, co-authored 65 publications receiving 1289 citations. Previous affiliations of Anders Karlsson include Royal Institute of Technology & ETH Zurich.
Papers
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A Multiplicative Ergodic Theorem and Nonpositively Curved Spaces
Anders Karlsson,Gregory Margulis +1 more
TL;DR: In this article, the integrable cocycles u.n; x/ over an ergodic measure preserving transformation that take values in a semigroup of nonexpanding maps of a nonpositively curved space Y, e.g. a Cartan-Hadamard space or a uniformly convex Banach space were studied.
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Non-expanding maps and Busemann functions
TL;DR: In this article, stronger versions and alternative simple proofs of some results of Beardon, [Be1] and [Be2] were given for contractions of locally compact metric spaces.
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On Laws of Large Numbers for Random Walks
TL;DR: In this paper, a general noncommutative law of large numbers for random walks on any locally finite homogeneous graph and Brownian motion on Riemannian manifolds was proved.
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Free Subgroups of Groups with Nontrivial Floyd Boundary
TL;DR: In this paper, it was shown that when a countable group admits a nontrivial Floyd-type boundary, then every nonelementary and metrically proper subgroup contains a noncommutative free subgroup.
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Linear Drift and Poisson Boundary for Random Walks
TL;DR: In this paper, a non-degenerate random walk on a locally compact group with finite first moment is considered, and it is shown that if there are no nonconstant bounded harmonic functions, all the linear drift comes from a real additive character on the group.