On the Picard Number of Fano 3-Folds with Terminal Singularities
Abstract
We prove the following main result: Let X be a Fano 3-fold with terminal Q-factorial singularities and X does not have a small extremal ray and a face of Kodaira dimension 1 or 2 for Mori polyhedron of X. Then the Picard number (X) < 8.
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