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Search: MSC category 14J45 ( Fano varieties )

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1. CMB 2010 (vol 54 pp. 520)

Polishchuk, A.
Simple Helices on Fano Threefolds
Building on the work of Nogin, we prove that the braid group $B_4$ acts transitively on full exceptional collections of vector bundles on Fano threefolds with $b_2=1$ and $b_3=0$. Equivalently, this group acts transitively on the set of simple helices (considered up to a shift in the derived category) on such a Fano threefold. We also prove that on threefolds with $b_2=1$ and very ample anticanonical class, every exceptional coherent sheaf is locally free.

Categories:14F05, 14J45

2. CMB 2006 (vol 49 pp. 270)

Occhetta, Gianluca
A Characterization of Products of Projective Spaces
We give a characterization of products of projective spaces using unsplit covering families of rational curves.

Keywords:Rational curves, Fano varieties
Categories:14J40, 14J45

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