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7.7.7.0. lieBracket
Procedure from library freegb.lib (see freegb_lib).

Usage:
lieBracket(a,b[,N]); a,b letterplace polynomials, N an optional integer

Return:
poly

Assume:
basering has a letterplace ring structure

Purpose:
compute the Lie bracket [a,b] = ab - ba between letterplace polynomials

Note:
if N>1 is specified, then the left normed bracket [a,[...[a,b]]]] is
computed.

Example:
 


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            User manual for Singular version 3-1-6, Dec 2012, generated by texi2html.