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D.6.4.8 morsesplit
Procedure from library classify.lib (see classify_lib).
- Usage:
- morsesplit(f); f=poly
- Return:
- Normal form of f in M^3 after application of the splitting lemma
- Compute:
- apply the splitting lemma (generalized Morse lemma) to f
Example:
| | LIB "classify.lib";
ring r=0,(x,y,z),ds;
export r;
init_debug(1);
==> Debugging level is set to 1
poly f=(x2+3y-2z)^2+xyz-(x-y3+x2*z3)^3;
poly g=morsesplit(f);
==> Residual singularity f= -x3+3/2xy2+1/2x3y-1/16x2y2+3x2y3
g;
==> -x3+3/2xy2+1/2x3y-1/16x2y2+3x2y3
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