40 citations · 85 across the 17 of their papers we have counts for
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math.CT2011★ 1 cited
Pseudogroups and their etale groupoids
Mark V. Lawson, Daniel H. Lenz
A pseudogroup is a complete infinitely distributive inverse monoid. Such inverse monoids bear the same relationship to classical pseudogroups of transformations as frames do to top…
math-ph2011
Absolutely continuous spectrum for random operators on trees of finite cone type
Matthias Keller, Daniel Lenz, Simone Warzel
We study the spectrum of random operators on a large class of trees. These trees have finitely many cone types and they can be constructed by a substitution rule. The random operat…
math.FA2011
Unbounded Laplacians on Graphs: Basic Spectral Properties and the Heat Equation
Matthias Keller, Daniel Lenz
We discuss Laplacians on graphs in a framework of regular Dirichlet forms. We focus on phenomena related to unboundedness of the Laplacians. This includes (failure of) essential se…