Geometria_Pisa May 2022

geometria_pisa@lists.dm.unipi.it

5 participants
12 discussions

[Indico] Luca Schaffler, Boundary divisors in the stable pair compactification of the moduli space of Horikawa surfaces, 04/05/2022, 14:30 Europe/Rome
by francesco.sala＠unipi.it 03 May '22

03 May '22

Title: Boundary divisors in the stable pair compactification of the moduli space of Horikawa surfaces, Speaker(s): Luca Schaffler, Roma 3, Date and time: 4 May 2022, 14:30 (Europe/Rome), Lecture series: Algebraic and Arithmetic Geometry Seminar, Venue: Dipartimento di Matematica (Aula Magna). You can access the full event here: https://events.dm.unipi.it/e/71 Abstract -------- Smooth minimal surfaces of general type with $K^2=1$, $p_g=2$, and $q=0$ constitute a fundamental example in the geography of algebraic surfaces, and the 28-dimensional moduli space $M$ of their canonical models admits a geometric and modular compactification $\overline{M}$ by stable surfaces. Franciosi-Pardini-Rollenske classified the Gorenstein stable degenerations parametrized by it, and jointly with Rana they determined boundary divisors parametrizing irreducible stable surfaces with a unique T-singularity. In this talk, we continue with the investigation of the boundary of $\overline{M}$ constructing eight new irreducible boundary divisors parametrizing reducible surfaces. Additionally, we study the relation with the GIT compactification of $M$ and the Hodge theory of the degenerate surfaces that the eight divisors parametrize. This is joint work in progress with Patricio Gallardo, Gregory Pearlstein, and Zheng Zhang. -- Indico :: Email Notifier https://events.dm.unipi.it/e/71

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Fwd: Concorso RTDB trieste
by Bruno Martelli 02 May '22

02 May '22

Buondì, Segnalo un RTD-B in Geometria a Trieste A presto, Bruno Martelli ---------- Forwarded message --------- Cari colleghi, vi inoltro l'annuncio di un concorso da RTDB per Geometria a Trieste con scadenza 12/5 (https://web.units.it/node/44270/ricerca/pub) con la preghiera di diffondere la notizia tra chi potrebbe essere interessato. Grazie mille, Alessia

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Geometria_Pisa May 2022