[Dottorcomp] Annuncio di Seminari | 10/06/2026 | Università Milano-Bicocca

[Michele D'Aquino]

Gentilissimi/e,

siamo lieti di invitarvi ai seguenti seminari di geometria che *Davide
Furchì *(Università degli Studi dell'Insubria) e *Paolo Grossi *(Università
di Pavia) terranno presso l’Università degli Studi di Milano-Bicocca:



*Data e ora:* Mercoledì 10 Giugno, ore 14:00

*Luogo:* Aula U9-11 (Edificio U9
<https://www.google.com/maps/place/Edificio+U9,+20126+Milano+MI/@45.5112563,9.2088447,761m/data=!3m2!1e3!4b1!4m6!3m5!1s0x4786c738345560f3:0xa646b139da8ff838!8m2!3d45.5112563!4d9.2114196!16s%2Fg%2F11mcy8qxy8?entry=ttu&g_ep=EgoyMDI2MDQyOS4wIKXMDSoASAFQAw%3D%3D>,
Viale dell'Innovazione 10, Milano) - Università degli Studi di
Milano-Bicocca



*Relatore**:* Davide Furchì

*Titolo:* The Hermitian Killing form and the Hermitian Distance degree

*Abstract:* In this talk, I will discuss the Hermitian distance problem,
specifically I am interested in knowing the number of critical points of
the induced differentiable real-valued function. I will first briefly
consider polynomials with conjugate variables (sometimes polyanalytic
polynomials), which characterize the Hermitian distance problem, and
present two methods to count their zeros, with an application to harmonic
polynomials. I will then introduce the concept of Hermitian Distance
degree, which is the set of naturals indicating the possible number of
critical points of the Hermitian distance from a generic position in the
ambient space to an algebraic variety. I will discuss properties and
present examples and results.



*Relatore**:* Paolo Grossi

*Titolo:* Galois closure and Lagrangian surfaces

*Abstract:* Given a 2n-dimensional smooth complex variety equipped with a
nondegenerate holomorphic 2 form, an n-dimensional subvariety is called
Lagrangian if the form vanishes identically on it. This seminar is devoted
to a joint work with Federico Moretti concerning a class of surfaces that
are Lagrangian in their Albanese variety and arise as Galois closures of
rational maps from very general (1,6) abelian surfaces to the projective
plane. These surfaces share some relevant properties and have relatively
low invariants: K^2 = 24, p_g = 6 and q =4. As a secondary result, we
proved the existence of a unique genus 6 hyperelliptic curve in the linear
system of the polarization of a very general (1,6) abelian surface. The
construction of hyperelliptic curves in the linear system of other (1,d)
polarizations is the subject of an ongoing collaboration with Paweł Borówka
and Anatoli Shatsila.



Ingresso libero e aperto a tutti.



Maggiori dettagli sull’evento a questo link
<https://www.matapp.unimib.it/it/eventi/seminari-geometria-davide-furchi-e-paolo-grossi>
.



Ringraziando per l'attenzione e sperando nella possibilità di diffusione a
tutti i possibili interessati, porgo cordiali saluti

--
Michele D'Aquino

Università degli Studi di Milano-Bicocca
Dipartimento di Matematica e Applicazioni
Via Roberto Cozzi, 55 - 20125 Milano