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Listar por palabra clave "Cone of curves"

Mostrando ítems 1-2 de 2

Non-positive and negative at infinity divisorial valuations of Hirzebruch surfaces

Galindo, Carlos; Monserrat Delpalillo, Francisco José; Moreno-Ávila, Carlos-Jesús (Springer-Verlag, 2020-05)

[EN] We consider rational surfaces Z defined by divisorial valuations ¿ of Hirzebruch surfaces. We introduce concepts of non-positivity and negativity at infinity for these valuations and prove that these concepts admit ...
The cone of curves and the Cox ring of rational surfaces given by divisorial valuations

Galindo Pastor, Carlos; Monserrat Delpalillo, Francisco José (Elsevier, 2016-02-26)

We consider surfaces X defined by plane divisorial valuations v of the quotient field of the local ring R at a closed point p of the projective plane P-2 over an arbitrary algebraically closed field k and centered at R. ...

Mostrando ítems 1-2 de 2