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D.6.12.4 StabEqn

Procedure from library qhmoduli.lib (see qhmoduli_lib).

Usage:
StabEqn(f); f polynomial

Purpose:
compute the equations of the isometry group of f.

Assume:
f semiquasihomogeneous polynomial with an isolated singularity at 0

Return:
list of two rings 'S1', 'S2'
- 'S1' contians the equations of the stabilizer (ideal 'stabid')
- 'S2' contains the action of the stabilizer (ideal 'actionid')

Global:
varSubsList, contains the index j s.t. x(i) -> x(i)t(j) ...

Example:
 


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