WebSep 5, 2012 · Cylinders in singular del Pezzo surfaces Ivan Cheltsov, Jihun Park and Joonyeong Won Compositio Mathematica Published online: 21 April 2016 Article Some extremal contractions between smooth varieties arising from projective geometry Alberto Alzati and Francesco Russo Proceedings of the London Mathematical Society Published … WebDec 19, 2024 · Transformation Groups. In this article, we shall look into the existence of vertical cylinders contained in a weak del Pezzo fibration as a generalization of the …
Multiple fibers of del Pezzo fibrations SpringerLink
WebApr 13, 2024 · Abstract. In this article, we shall look into the existence of vertical cylinders contained in a weak del Pezzo fibration as a … WebCYLINDERS IN WEAK DEL PEZZO FIBRATIONS MASATOMO SAWAHARA Abstract. In this article, we shall look into the existence of vertical cylinders contained in a weak del Pezzo fibration as a generalization of the former work due to Dubouloz and Kishimoto in which they observed that of vertical cylinders found in del Pezzo fibrations. The … daniel\u0027s upholstery thousand oaks
Singularities of linear systems and 3-fold birational geometry
WebCYLINDERS IN WEAK DEL PEZZO FIBRATIONS 3 (1) Scontains an A1 k-cylinder if and only if d= 8 and Sis endowed with a structure of Mori conic bundle admitting a section defined over k. (2) Scontains the affine plane A2 k if and only if d= 8 and S(k) 6= ∅. Note that Theorem 1.7 excludes the case of Picard rank one since it has already been studied WebNov 27, 2024 · CYLINDERS IN WEAK DEL PEZZO FIBRATIONS Authors MASATOMO SAWAHARA Content type: OriginalPaper Published: 13 April 2024 Pages: 413 - 437 … WebIn all cases, these surfaces satisfy weak approximation (assuming they have a point). July 24th: Showed that del Pezzo surfaces of degree 5 always have a rational point and are birational to the plane, over the ground field. Introduced the Azumaya Brauer group and the cohomological Brauer group (which coincide for nice varieties). daniel\u0027s vision of change