Bollettino settimanale
Settimana 11/12/2023 - 15/12/2023
Seminari
Università degli Studi di Roma Tor Vergata
Dipartimento di Matematica
Geometry Seminar
Date: 13th december 2023
Schedule: 16:00 - Rome Time
Where: Conference Room 2001
Title of first seminar: "On Chowla's non vanishing conjecture "
Speaker: Carlo pagano Concordia University
Abstract:
I will describe ongoing work with Peter Koymans and Mark
Shusterman, showing that for fixed q congruent to 3 modulo 4, one has
non-vanishing of L(1/2,chi) for 100% of imaginary quadratic characters chi
of Fq(T) (ordered by discriminant). This result, predicted by the
Katz-Sarnak heuristics, is the probabilistic version of Chowla's non
vanishing conjecture: it is known that over function fields one cannot hope
for a deterministic statement, as shown in a fairly robust way by Wanlin Li
in 2018. I will explain how this result sits into a web of methods aimed at
controlling the distribution of 2^{infty}-Selmer groups in quadratic twists
families.
Note: the seminar are part of the activity of the MIUR Excellence Department Projects MathMod@TOV, and the Prin 2022 Moduli Spaces and Birational Geometry.
Title of second seminar: " Averages of multiplicative functions over integer sequences "
Speaker: Εfthymios Sofos University of Glasgow
Abstract:
In joint work with Chan, Koymans and Pagano we prove matching
upper and lower bounds for multiplicative functions when averaged over
general integer sequences. We give applications to Cohen—Lenstra conjecture
and Manin’s conjecture for counting solutions of Diophantine equations in a
small number of variables.
Note: the seminar are part of the activity of the MIUR Excellence Department Projects MathMod@TOV, and the Prin 2022 Moduli Spaces and Birational Geometry.
Organizing Committee:
Giulio Codogni (mail to contact)
Guido Maria Lido (mail to contact)
Further Info: Click here for Geometry Page
Streaming Link (MS Teams): This seminar will be held: mix mode in person and streaming
Università degli Studi di Roma Tor Vergata
Dipartimento di Matematica
Differential Equations Seminar
Date: 12th December 2023
Schedule: 16:00 - Rome Time
Where: Conference Room 1201 "R. Dal Passo"
Title: " Scalar balance laws with nonlocal singular sources "
Speaker: Tien Khai Nguyen North Carolina State University
Abstract:
The c In this presentation, I will establish the global existence of entropy weak solutions for scalar balance laws with nonlocal singular sources,
along with a partial uniqueness result. A detailed description of the solution is provided for
a general class of initial data in a neighborhood where two shocks interact. Additionally, some open questions will be discussed.
The speaker will be connected remotely
Note: the seminar are part of the activity of the MUR Excellence Department Project MatMod@TOV (CUP E83C23000330006)
Organizing Committee:
Alfonso Sorrentino (mail to contact)
Riccardo Molle (mail to contact)
Further Info: Click here for Differential Equations Semina Page
Streaming Link (MS Teams): This seminar will be held in person
Università degli Studi di Roma "Tor Vergata"
Dipartimento di Matematica
Algebra and Representation Theory Seminar - A.R.T.S. -
Date: 15th Friday
Schedule: 14:30 Rome Time
Where: Conference Room 1201 “Roberta Dal Passo”
Title of first seminar: T.B.A.
Speaker: Chetan VUPPULURY "La Sapienza" Università di Roma
Abstract:
Projective representations of a group G with assigned 2-cocycle α are equivalent to (certain) representations of the central extension of G associated with α. This classical result can be seen as a piece of 2-category theory fallen into the realm of 1-categories, and in this perspective it admits natural generalizations relevant to the context of anomalous topological or Euclidean QFTs. In particular, Stolz-Teichner's Clifford field theories naturally emerge as a particular example of this construction.
Schedule: 16:00 Rome Time
Title of first second: T.B.A.
Speaker: T.B.A.
Abstract:
T.B.A.
Organizing Committee:
Fabio Gavarini (mail to)
Niels Kowalzig (mail to)
Martina Lanini (mail to)
Further Info: Click here for webpage
Streaming Link (MS Teams): This seminar will be held in person
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