Università degli Studi di Pavia

Dipartimento di Matematica ''F. Casorati''

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A variation on a theme of Faber and Fulton

Michele Bolognesi (Montpellier)

Aula Beltrami - Thursday, November 2, 2017 h.16:00


Abstract. In this talk we study the geometry of GIT congurations of n ordered points on P^1 both from the the birational and the biregular viewpoint. In particular, we prove that any extremal ray of the Mori cone of effective curves of the quotient (P^1)^n//PGL(2), taken with the symmetric polarization, is generated by a one dimensional boundary stratum of the moduli space. Furthermore, we develop some technical machinery that we use to compute its group of automorphisms. (joint work with A.Massarenti)



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Dipartimento di Matematica ''F. Casorati''

Università degli Studi di Pavia - Via Ferrata, 5 - 27100 Pavia
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