Top
Back: ringweights
Forward: rootofUnity
FastBack: random_lib
FastForward: Linear algebra
Up: ring_lib
Top: Singular Manual
Contents: Table of Contents
Index: Index
About: About this document

D.2.8.14 preimageLoc

Procedure from library ring.lib (see ring_lib).

Usage:
preimageLoc ( ring_name, map_name, ideal_name );
all input parameters of type string

Return:
ideal

Purpose:
compute the preimage of an ideal under a given map for non-global orderings.
The 2nd argument has to be the name of a map from the basering to the given ring (or the name of an ideal defining such a map), and the ideal has to be an ideal in the given ring.

Example:
 
See also: preimage.


Top Back: ringweights Forward: rootofUnity FastBack: random_lib FastForward: Linear algebra Up: ring_lib Top: Singular Manual Contents: Table of Contents Index: Index About: About this document
            User manual for Singular version 3-1-6, Dec 2012, generated by texi2html.