[Dottorcomp] Insalate di Matematica - M. Tarocchi 09/05/24

[Insalate Di Matematica]

Dear all,

We remind you *today*'s appointment of the series of seminars "Insalate di
Matematica".
Here are the details:

*Speaker*: *Matteo Tarocchi* (Università degli Studi di Milano-Bicocca)

*Date and time*: *9th of May 2024, 4:30 pm (CET)*

*Title*: "Groups acting on fractals and graph approximations"

*Abstract*: This talk is about rearrangement groups: a family of groups of
certain homeomorphisms of fractals that permute finitely many self-similar
pieces. Homeomorphism groups of fractals are often uncountable topological
groups, which are difficult to study algebraically. Rearrangement groups,
while only being countable, are often rich enough to be dense in the
homeomorphism groups of the fractals on which they act, yet they are
manageable enough that algorithmic problems on them are treatable, and they
have plenty of interesting algebraic properties of their own. Since this
talk is aimed at a general audience and deals with an intersection of
topology, algebra and computation, it will focus on a general description
of rearrangements and, as an application, show how to tackle their
conjugacy problem

*Keywords:* homeomorphism groups, self-similar fractals, decision problems

*Information to attend in room 3014*
The seminar will take place in room 3014, at the building U5-Ratio,
Università degli Studi di Milano Bicocca.


*Information to attend online*
https://unimib.webex.com/unimib/j.php?MTID=mbda2ef40f5c8008497021940ceb3b143
(password:
insalate, 46725283 from phones)
<https://unimib.webex.com/unimib/j.php?MTID=m3c536ba5a33f71bb9d6a3bc9b00992ad>

For further information, please visit our website:
https://sites.google.com/view/insalate-di-matematica or contact us at
insalate.matematica a unimib.it. Find us also on our Instagram page:
https://www.instagram.com/insalate_di_matematica23/
<https://www.instagram.com/insalate_di_matematica22/>

The organizers: Ettore Marmo, Simone Gallivanone, Fabio Mastrogiacomo,
Marco Fusari, Tommaso Toti and Matteo Tarocchi.
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