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On morphisms onto quadrics

Ekaterina Amerik
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Abstract

It is proved that the degree of a morphism from a smooth projective n-fold with Picard number one to a smooth n-quadric is bounded (provided, of course, that n is at least three). Actually it has been proved some years ago, but I have never written down the proof, until J.-M. Hwang suggested, recently, that I do.

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Ekaterina Amerik. 2006-06-06. On morphisms onto quadrics. https://arxiv.org/abs/math/0606138

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