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Hard Lefschetz theorems for free line bundles

Author:
Jiajun Hu, Shijie Shang, Jian Xiao
Keyword:
Mathematics, Algebraic Geometry, Algebraic Geometry (math.AG)
journal:
--
date:
2023-05-29 16:00:00
Abstract
We introduce a partial positivity notion for algebraic maps via the defect of semismallness. This positivity notion is modeled on $m$-positivity in the analytic setting and $m$-ampleness in the geometric setting. Using this positivity condition for algebraic maps, we establish K\"ahler packages, that is, Hard Lefschetz theorems and Hodge-Riemann bilinear relations, for the complete intersections of Chern classes of free line bundles.
PDF: Hard Lefschetz theorems for free line bundles.pdf
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