[Dottorcomp] Insalate di Matematica - I. Castellano (12/05)

[Mbs Insalate Di Matematica]

Dear all,

as a part of the series of seminars *"Insalate di Matematica"*,
we remind you that today there is a seminar held by *Ilaria
Castellano* (Università
degli Studi di Milano-Bicocca).
The seminar can be attended *online* (Webex access link below) or *in
person* in room 3014 (building U5-Ratio, Università degli Studi di
Milano-Bicocca) by prior reservation at the link
https://sites.google.com/view/insalate-di-matematica/reservation?authuser=0

Here the details:

*Speaker*: *Ilaria Castellano (Università degli Studi di Milano-Bicocca)*

*Date and time*: *12th May 2022, 2:00 pm (sharp) CET*

*Title*: *"**Automorphism groups of regular trees as topological groups"*

*Webex*:
https://unimib.webex.com/unimib/j.php?MTID=m93cfaa565b4c4bdd0a6f46038a6ba5f9
 (*Password*: Insalate)

*Abstract*: A connected graph without closed paths is called a tree and a
tree is said to be d-regular if every vertex has exactly d adjacent
vertices. The automorphism group of such a combinatorial object can be
endowed with a topology that turns it into a locally compact group, and the
aim of the first part of the talk will be to describe such a topology. The
target is then to play a bit further with the automorphism groups of
infinite regular trees in order to construct a few more topological groups:
they will provide some of the most relevant examples of totally
disconnected locally compact groups we are aware of. Indeed the second part
of the talk will be devoted to a brief overview of the theory of this class
of locally compact groups.

*Keywords*: regular tree - automorphism group - totally disconnected
locally compact group.

*** We inform you that the talk will be recorded and uploaded on our
website. If you join the talk after the starting time, we kindly ask you to
ensure that your microphone and webcam are turned off ***

For further information, please visit our website:
https://sites.google.com/view/insalate-di-matematica or contact us at
insalate.matematica a unimib.it.

We are looking forward to seeing you!

The organizers: Luigi Appolloni, Andrea Bisterzo, Alberto Cassella,
Francesca Cottini, Ludovico Marini



Il giorno gio 5 mag 2022 alle ore 10:00 Mbs Insalate Di Matematica <
insalate.matematica a unimib.it> ha scritto:

> As part of the series of seminars *"Insalate di Matematica"*, *Ilaria
> Castellano*, postdoc at the Università degli Studi di Milano-Bicocca,
> will deliver a talk.
> According to the current Covid regulations, the seminar will be held in a *hybrid
> mode* *(more information below)*.
>
> Here the details:
>
> *Date and time*: *12th May 2022, 2:00 pm (CET)*
>
> *Title*: *"**Automorphism groups of regular trees as topological groups"*
>
> *Abstract*: A connected graph without closed paths is called a tree and a
> tree is said to be d-regular if every vertex has exactly d adjacent
> vertices. The automorphism group of such a combinatorial object can be
> endowed with a topology that turns it into a locally compact group, and the
> aim of the first part of the talk will be to describe such a topology. The
> target is then to play a bit further with the automorphism groups of
> infinite regular trees in order to construct a few more topological groups:
> they will provide some of the most relevant examples of totally
> disconnected locally compact groups we are aware of. Indeed the second part
> of the talk will be devoted to a brief overview of the theory of this class
> of locally compact groups.
>
> *Keywords*: regular tree - automorphism group - totally disconnected
> locally compact group.
>
>
>
> *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. Unfortunately, only a limited
> number of participants is allowed in presence, hence reservation is
> mandatory. You can reserve at the following link:
> https://sites.google.com/view/insalate-di-matematica/reservation?authuser=0
>
> We also remind that you will be required to exhibit your green pass at the
> entrance of the building.
>
> *Information to attend online*
> The seminar will be streamed via Webex platform at the following link:
> https://unimib.webex.com/unimib/j.php?MTID=m93cfaa565b4c4bdd0a6f46038a6ba5f9
> (*Password*: Insalate)
> *** We inform you that the talk will be recorded and uploaded on our
> website. If you join the talk after the starting time, we kindly ask you to
> ensure that your microphone and webcam are turned off ***
>
> You can find the poster of the event in the attachment. We are looking
> forward to seeing you!
>
> For further information, please visit our website:
> https://sites.google.com/view/insalate-di-matematica or contact us at
> insalate.matematica a unimib.it.
>
>
> The organizers: Luigi Appolloni, Andrea Bisterzo, Alberto Cassella,
> Francesca Cottini, Ludovico Marini.
>
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