Seshadri positive submanifolds of polarized manifolds

Details Seshadri positive submanifolds of polarized manifolds Seshadri positive submanifolds of polarized manifolds

2011-09-22

arxiv.org/abs/1109.4765v1

Mathematics

Algebraic Geometry

32 pages

Scientific paper

Let $Y$ be a submanifold of dimension $y$ of a polarized complex manifold $(X,A)$ of dimension $k\geq 3$, with $1\leq y\leq k-1$. We define and study two positivity conditions on $Y$ in $(X,A)$, called Seshadri $A$-bigness and (a stronger one) Seshadri $A$-ampleness. In this way we get the natural generalization of the theory initiated by Paoletti in \cite{Pao} (which corresponds to the case $(k,y)=(3,1)$) and subsequently generalized and completed in \cite{BBF} (regarding curves in a polarized manifold of arbitrary dimension). The theory presented here, which is new even if $y=k-1$, is motivated by a reasonably large area of examples.

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