Top
Back: D.2.2.19 primefactors
Forward: D.2.2.21 timeFactorize
FastBack: D. SINGULAR libraries
FastForward: E. Release Notes
Up: D.2.2 general_lib
Top: Singular 2-0-4 Manual
Contents: Table of Contents
Index: F. Index
About: About This Document

D.2.2.20 timeStd

Procedure from library general.lib (see general_lib).

Usage:

timeStd(i,d), i ideal, d integer

Return:

std(i) if the standard basis computation finished after d-1 seconds and i otherwise

Example:

 
LIB "general.lib";
ring r=32003,(a,b,c,d,e),dp;
int n=6;
ideal i=
a^n-b^n,
b^n-c^n,
c^n-d^n,
d^n-e^n,
a^(n-1)*b+b^(n-1)*c+c^(n-1)*d+d^(n-1)*e+e^(n-1)*a;
ideal j=timeStd(i,2);
j;
→ j[1]=a6-b6
→ j[2]=b6-c6
→ j[3]=c6-d6
→ j[4]=d6-e6
→ j[5]=a5b+b5c+c5d+d5e+ae5

Top Back: D.2.2.19 primefactors Forward: D.2.2.21 timeFactorize FastBack: D. SINGULAR libraries FastForward: E. Release Notes Up: D.2.2 general_lib Top: Singular 2-0-4 Manual Contents: Table of Contents Index: F. Index About: About This Document
            User manual for Singular version 2-0-4, October 2002, generated by texi2html.