The correspondence between finite screw systems and projective spaces

2008 ◽  
Vol 43 (1) ◽  
pp. 50-56 ◽  
Author(s):  
Chintien Huang ◽  
Koichi Sugimoto ◽  
Ian Parkin
Keyword(s):  
Projective Spaces

scholarly journals Curves with Two Pencils and Associated Maps to Projective Spaces

2006 ◽  
Vol 13 (3) ◽  
pp. 411-417
Author(s):  
Edoardo Ballico
Keyword(s):  
Linear System ◽  
Projective Spaces ◽  
Free Resolution ◽  
Homogeneous Ideal ◽  
Projective Curve ◽  
Minimal Free Resolution ◽  
Complete Linear System

Abstract Let 𝑋 be a smooth and connected projective curve. Assume the existence of spanned 𝐿 ∈ Pic𝑎(𝑋), 𝑅 ∈ Pic𝑏(𝑋) such that ℎ0(𝑋, 𝐿) = ℎ0(𝑋, 𝑅) = 2 and the induced map ϕ 𝐿,𝑅 : 𝑋 → 𝐏1 × 𝐏1 is birational onto its image. Here we study the following question. What can be said about the morphisms β : 𝑋 → 𝐏𝑅 induced by a complete linear system |𝐿⊗𝑢⊗𝑅⊗𝑣| for some positive 𝑢, 𝑣? We study the homogeneous ideal and the minimal free resolution of the curve β(𝑋).

Branched Coverings and Minimal Free Resolution for Infinite-Dimensional Complex Spaces

2003 ◽  
Vol 10 (1) ◽  
pp. 37-43
Author(s):  
E. Ballico
Keyword(s):  
Projective Space ◽  
Projective Spaces ◽  
Free Resolution ◽  
Complete Intersections ◽  
Vanishing Theorem ◽  
Sheaf Cohomology ◽  
Minimal Free Resolution ◽  
Branched Coverings ◽  
Infinite Dimensional ◽  
Complex Spaces

Abstract We consider the vanishing problem for higher cohomology groups on certain infinite-dimensional complex spaces: good branched coverings of suitable projective spaces and subvarieties with a finite free resolution in a projective space P(V ) (e.g. complete intersections or cones over finitedimensional projective spaces). In the former case we obtain the vanishing result for H 1. In the latter case the corresponding results are only conditional for sheaf cohomology because we do not have the corresponding vanishing theorem for P(V ).

Stability of meromorphic vector fields in projective spaces

1989 ◽  
Vol 64 (1) ◽  
pp. 462-473 ◽  
Author(s):  
Xavier Gómez-Mont ◽  
George Kempf
Keyword(s):  
Vector Fields ◽  
Projective Spaces

scholarly journals On the balanced upper chromatic number of cyclic projective planes and projective spaces

2015 ◽  
Vol 338 (12) ◽  
pp. 2562-2571 ◽  
Author(s):  
Gabriela Araujo-Pardo ◽  
György Kiss ◽  
Amanda Montejano
Keyword(s):  
Chromatic Number ◽  
Projective Spaces ◽  
Projective Planes
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