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Rational curves on blowing-ups of projective spaces

Bumsig Kim, Yongnam Lee, Kyungho Oh

math.AGarXiv:math/0612607

Abstract

We prove the irredcibility (and the rational connectedness) of the moduli spaces of (free) morphisms from a projective line to a successive blowing-up of a product of projective spaces if a suitable numerical condition on morphisms is provided (and also if all centers of the blowing-up are rationally connected).

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