getform - Maple Help

liesymm

 getform
 extract the basis element of a single wedge product

 Calling Sequence getform(expr)

Parameters

 expr - term involving a wedge product

Description

 • This routine is part of the liesymm package and is loaded via with(liesymm).
 • Given an expression expr involving a single wedge product factor out the coefficient.
 • If more than one wedge product is encountered an error message is given.

Examples

 > $\mathrm{with}\left(\mathrm{liesymm}\right):$$\mathrm{setup}\left(x,y,z\right):$
 > $\mathrm{getform}\left(ad\left(x\right)\right)$
 ${d}{}\left({x}\right)$ (1)
 > $\mathrm{getform}\left(ad\left(x\right)+bd\left(x\right)\right)$
 ${d}{}\left({x}\right)$ (2)
 > $\mathrm{map}\left(\mathrm{getform},ad\left(x\right)+bd\left(y\right)\right)$
 ${d}{}\left({x}\right){+}{d}{}\left({y}\right)$ (3)
 > $\mathrm{getform}\left(\frac{1\left(d\left(x\right)\right)&^\left(d\left(y\right)\right)}{c}\right)$
 ${d}{}\left({x}\right)\phantom{\rule[-0.0ex]{0.3em}{0.0ex}}{&ˆ}\phantom{\rule[-0.0ex]{0.3em}{0.0ex}}{d}{}\left({y}\right)$ (4)
 > $\mathrm{getform}\left(c\right)$
 ${1}$ (5)