Top
Back: facShift
Forward: homogfacNthWeyl
FastBack:
FastForward:
Up: ncfactor_lib
Top: Singular Manual
Contents: Table of Contents
Index: Index
About: About this document
7.5.12.0. facFirstShift
Procedure from library ncfactor.lib (see ncfactor_lib).

Usage:
facFirstShift(h); h a polynomial in the first shift algebra

Return:
list

Purpose:
compute all factorizations of a polynomial in the first shift algebra

Theory:
This function is a wrapper for facShift. It exists to make this library downward-compatible with older versions.

Assume:
basering is the first shift algebra

Note:
Every entry of the output list is a list with factors for one possible factorization.

Example:
 
LIB "ncfactor.lib";
ring R = 0,(x,s),dp;
def r = nc_algebra(1,s);
setring(r);
poly h = (s^2*x+x)*s;
facFirstShift(h);
==> [1]:
==>    [1]:
==> 1
==>    [2]:
==>       s
==>    [3]:
==>       s2+1
==>    [4]:
==>       x-1
==> [2]:
==>    [1]:
==> 1
==>    [2]:
==>       s2+1
==>    [3]:
==>       s
==>    [4]:
==>       x-1
==> [3]:
==>    [1]:
==> 1
==>    [2]:
==>       s2+1
==>    [3]:
==>       x
==>    [4]:
==>       s
See also: facFirstWeyl; facSubWeyl; testNCfac.


Top Back: facShift Forward: homogfacNthWeyl FastBack: FastForward: Up: ncfactor_lib Top: Singular Manual Contents: Table of Contents Index: Index About: About this document
            User manual for Singular version 4.3.2, 2023, generated by texi2html.