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1
BIRS Workshop — Toric Degenerations
04 Dec 2022 - 09 Dec 2022 • Banff, Alberta, Canada
Organizer:
Banff International Research Station (BIRS) for Mathematical Innovation and Discovery
Event listing ID:
1439667
Related subject(s):
2
Mini-School — Huge groups
03 Apr 2023 - 06 Apr 2023 • Montréal, Canada
Organizer:
CRM / Université de Montréal
Abstract:
This mini-school focuses on “huge” groups, such as the Cremona group and its subgroups, the homeomorphism group of a surface, the mapping class group of an infinite-type surface, a general Artin group. They can be studied through non-proper actions on nonpositively or negatively curved combinatorial spaces.
Event listing ID:
1482439
Related subject(s):
3
Summer Graduate School — Séminaire de Mathématiques Supérieures 2023: Periodic and Ergodic Spectral Problems
19 Jun 2023 - 30 Jun 2023 • University of Montreal, Canada
Abstract:
This two week school will focus on spectral theory of periodic, almost-periodic, and random operators. The study of periodic problems is one of the most classical subjects of spectral theory. Many of the basic properties of periodic operators are now well understood due to the powerful method known as the Floquet-Bloch decomposition which performs a partial diagonalisation of the operator. Another type of problems mathematicians and physicists have been interested in is known under the broad name of ergodic problems; the most prominent among them being almost-periodic and random problems. These problems are much more complicated because no straightforward partial diagonalisation is known for them. The study of the spectral properties for ergodic problems developed to a large extent independently of the periodic theory, although occasionally periodic results were used in almost-periodic or even random settings. The interplay between almost-periodic and random problems has been more significant, but still, most of the methods have been specific to each of these two types. In the last few years however there emerged a number of methods which originated in one type of these problems but were successfully used to tackle problems from neighbouring areas (periodic methods used to deal with almost-periodic or random problems, etc). This suggests that these three lines of research have more in common than previously believed. The main aim of this school is to teach the students who work in one of these areas methods used in parallel problems, explain the similarities between all these areas and show them the ‘big picture’.
Event listing ID:
1515671


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Last updated: 29 September 2022