Antonio Laface. U de Concepción
On intrinsic negative curves (Irracional 2)
contactar Gian zoom
Abstract:
I will define expected and unexpected intrinsic
negative curves in a torus showing that the blowing-up
of P(9,10,13) at (1,1) cannot contain expected ones [2].
Then I will discuss the existence of two infinite families
of expected intrinsic negative curves [1].
[1] Javier González-Anaya, José Luis González, and Kalle Karu.
Curves generating extremal rays in blowups of weighted projective planes.
arXiv:2002.07123.
[2] Kazuhiko Kurano and Naoyuki Matsuoka.
On finite generation of symbolic Rees rings of space monomial curves
and existence of negative curves.
J. Algebra 322 (9):3268–3290, 2009.