Mathematics – Algebraic Geometry
Scientific paper
2003-04-22
Mathematics
Algebraic Geometry
24 pages, 3 figures
Scientific paper
We describe the set of Mori structures for a Fano 3-fold of index 2 and
degree 1 (the double cone over the Veronese surface). In partiular, it is
proved that such a Fano variety is not rational, the group of birational
automorphisms coincides with the group of biregular automorphisms, and there
are no structures of conic bundle.
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