Abstract
Let $f : X \to B$ be a fiber space over a curve $B$ whose general fiber $F$ belongs to one of the following type: 1) $F$ is of general type and satisfying some mild conditions, 2) $F$ is with trivial canonical sheaf. In this note, a numerical characterization for $f : X \to B$ to be birationally trivial is given.
Citation
Jin-Xing Cai. "Numerical criteria for certain fiber spaces to be birationally trivial." Nagoya Math. J. 168 93 - 103, 2002.
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