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Viewing Version 2 of 'divisor'
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Title of object: divisor
Canonical Name: DivisorOnACurve
Type: Definition

Created on: 2001-12-12 17:55:45-05
Modified on: 2002-09-21 19:04:59.676525-04

Creator: nerdy2
Modifier: akrowne
Author: nerdy2

Classification: msc:14C20
Keywords: curve
Defines: degree
Synonyms: divisor=Weil divisor

Revision comment (for changes between this and next version):

trying to tweak appearance by removing amsfonts

Preamble:

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Content:

A {\em divisor} $D$ on a projective nonsingular curve over an algebraically closed field is a formal sum of points $D = \sum n_p p$ where only finitely many of the $n_p\in\mathbb{Z}$ are nonzero.
The {\em degree} of a divisor $D$ is ${\rm deg}(D) = \sum n_p$.