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Tangent, normal, and visibility cones on Bézier surfaces

✍ Scribed by Deok-Soo Kim; Panos Y. Papalambros; Tony C. Woo

Publisher
Elsevier Science
Year
1995
Tongue
English
Weight
686 KB
Volume
12
Category
Article
ISSN
0167-8396

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On non-normal del Pezzo surfaces
On non-normal del Pezzo surfaces
✍ Makoto Abe; Mikio Furushima 📂 Article 📅 2003 🏛 John Wiley and Sons 🌐 English ⚖ 178 KB

## Abstract Let __Y__ be a non‐normal del Pezzo surface over ℂ and let __d__ ≔ (__ω__^−1^~__Y__~)^2^ > 0 be the degree of __Y__. Then we prove that __ω__^⊗__d__−4^~__Y__~ is very ample for __d__ = 1, 2.