[Dottorcomp] Insalate di Matematica - M. Fusari 04/12/2024

[Insalate Di Matematica]

Dear all,

We remind you *tomorrow*'s appointment of the series of seminars "Insalate
di Matematica". Due to unforeseen circumstances, we have to begin the
seminar already at 3:30 pm (CET) instead of 4:30 pm (CET) as usual. We
would like to apologize for the inconvenience.
Here are the details:

*Speaker*: *Marco Fusari* (Università degli Studi di Milano-Biocca)

*Date and time*: 4th of December 2024, *3:30 pm (CET) *(notice the change
of schedule)

*Title*: "Cliques in derangement graphs"

*Abstract*: Given a permutation group G, the derangement graph ΓG of G is
the Cayley graph with connection set the derangements of G. In a recent
paper of 2021 Meagher, Razafimahatratra and Spiga conjectured that there
exists a function f :N->N such that, if G is transitive of degree n and ΓG
has no k-clique, then n<=f(k). The conjecture has been proved for innately
transitive groups, that are a generalization of primitive groups.
Motivation for this work arises from investigations on Erdos-Ko-Rado type
theorems for permutation groups.

*Keywords:* Group theory, Permutation group, Combinatorics, Graph theory

*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=m101728a0c0258813b6aa97783fb11fad
(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_matematica24/

The organizers: Anna Donadini, Julian Feuerpfeil, Marco Fusari,
Kirubell Haile, Paolo Malanchini, Ettore Marmo, Fabio Mastrogiacomo,
Claudia Nocita, Eleonora Sforza and Tommaso Toti.