Top
Back: makeFormalDivisor
Forward: formaldivisorplus
FastBack:
FastForward:
Up: divisors_lib
Top: Singular Manual
Contents: Table of Contents
Index: Index
About: About this document

D.15.5.12 evaluateFormalDivisor

Procedure from library divisors.lib (see divisors_lib).

Usage:
evaluateFormalDivisor(D); D = formal divisor.

Assume:
D is a formal divisor on X.

Return:
a divisor on X

Theory:
Will evaluate the formal sum.

Example:
 
LIB "divisors.lib";
ring r=31991,(x,y,z),dp;
ideal I = y^2*z - x*(x-z)*(x+3*z);
qring Q = std(I);
divisor A = makeDivisor(ideal(x,z),ideal(1));
divisor B = makeDivisor(ideal(x,y),ideal(1));
formaldivisor fE= makeFormalDivisor(list(list(-5,A),list(2,B)));
evaluateFormalDivisor(fE);


Top Back: makeFormalDivisor Forward: formaldivisorplus FastBack: FastForward: Up: divisors_lib Top: Singular Manual Contents: Table of Contents Index: Index About: About this document
            User manual for Singular version 4-0-3, 2016, generated by texi2html.