Birational Mori fiber structures of Q-Fano 3-fold weighted complete intersections, II

18 Aug 2015  ·  Okada Takuzo ·

In this paper we study 14 families among 85 families of anticanonically embedded Q-Fano threefolds weighted complete intersections of codimension 2 and show that every quasismooth member is birationally birigid, that is, it is birational to another Q-Fano threefold but not birational to any other Mori fiber space...

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Algebraic Geometry