Contents

complex geometry

cohomology

# Contents

## Definition

Given an algebraic variety or scheme $X$, then its Néron-Severi group is the quotient of its Picard scheme $Pic_X$ by the connected component $Pic_X^0$ of the neutral element.

• A choice of an ample element in the Néron-Severi group is called a choice of polarization.

Last revised on May 30, 2014 at 09:12:07. See the history of this page for a list of all contributions to it.