Top
Back: expo
Forward: round
FastBack:
FastForward:
Up: atkins_lib
Top: Singular Manual
Contents: Table of Contents
Index: Index
About: About this document

D.12.2.9 jOft

Procedure from library atkins.lib (see atkins_lib).

Usage:
jOft(t,k);

Return:
the j-invariant of t

Assume:
t is a complex number with positive imaginary part

Note:
k describes the number of summands being calculated in the power series, 10*k is input for the procedure expo

Example:
 
LIB "atkins.lib";
ring r = (complex,30,i),x,dp;
number t=(-7+i*sqr(7,250))/2;
jOft(t,50);
==> -3375


Top Back: expo Forward: round FastBack: FastForward: Up: atkins_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.