[Dottorcomp] [dottormate] Insalate di Matematica - C. Agostini (reminder)

[Mbs Insalate Di Matematica]

 Dear all,

As a part of the series of seminars *"Insalate di Matematica"*, we remind
you that today there will be the first seminar of the new academic year.
Moreover, we remind you that the seminar can also be attended *in presence*
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
You will be required to exhibit your green pass at the entrance of the
building.

Here the details:

*Date and time*: *20th October 2021, 2:00 pm *

*Title*:

*"Coloring the numbers, and other funny things to do" Google Meet access
link:  meet.google.com/kqg-gazi-yzh <http://meet.google.com/kqg-gazi-yzh> *

*Abstract*: Is it true that for every finite coloring of the natural
numbers there is an infinite set having all finite sums of the same color?
This problem has been an outstanding open conjecture for a long time, until
Neil Hindman in 1974 answered it positively. Soon afterward, Galvin and
Glazer gave a second proof of this result that involved tools from logic
and model theory. These tools have started a new line of research in
combinatorics that have revealed to be very proficuous, leading to other
famous results such as Carlson's Theorem in 1988, and Gowers' Theorem in
1992, and having a major impact across many fields of mathematics, such as
functional analysis, ergodic theory, topological dynamics, logic and
algebra.
In this talk, I will go through the history of these famous theorems, and
briefly present some recent lines of research in the field.

*Keywords*: Combinatorics, Ramsey theory, logic and model theory,
semigroups and monoids.

*** 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 ***

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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