On subadditivity of Kodaira dimension in positive characteristic over a general type base

We show that for a surjective, separable morphism f of smooth projective varieties over a field of positive characteristic such that f(*) OX congruent to O-Y subadditivity of Kodaira dimension holds, provided the base is of general type and the Hasse-Witt matrix of the geometric general fiber is not nilpotent.


Published in:
Journal of Algebraic Geometry, 27, 21-53
Year:
2018
ISSN:
1056-3911
Keywords:
Laboratories:




 Record created 2017-09-21, last modified 2018-10-07


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