ApCoCoA-1:DA.LD
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diffalg.LD
the leading derivative of a differential polynomial
Syntax
$diffalg.LD(F:POLY):POLY
Description
LD computes the leading derivative of polynomial F wrt. the current differential term ordering, or the hereby induced ranking respectivly.
Example
Use Q[x[1..2,0..20]];
Use Q[x[1..2,0..20]], Ord($diffalg.DiffTO("DegOrd"));
F:=x[1,2]^2*x[1,1]-x[2,4]^3;
$diffalg.LD(F);
-------------------------------
x[2,4]
-------------------------------
