MathematischeGesellschaft Joint spectrum, self-similar groups and Schreier graphs. -> ACHTUNG: Veranstaltung abgesagt!!! |  |
Vortragende Person:Prof. Rostislav I. Grigorchuk, Texas A&M University
Veranstalter:Mathematisches Institut
Beschreibung:
We will explain how the idea of joint spectrum of pencil of operators was used to study the spectral problem for graphs and groups. Self-similar groups will be defined and their role in mathematics will be outlined. A few results about joint spectra of operators associated with self-similar groups such as the "first" group of intermediate growth, the lamplighter group, and the Hanoi Towers groups on three pegs will be stated. The answer to the questions "Can one hear the shape of a group?" will be given. Also it will be explained how renormalization is involved into the spectral problem.
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Veranstaltungsart:Kolloquium
Veranstaltungssprache:Englisch
Kategorie:Forschung
Name der einladenden Person:Prof. Dr. Laurent Bartholdi
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Direkter Link zur Veranstaltung:https://events.goettingen-campus.de/event?eventId=19112
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