Computing Hironaka's invariants: Ridge and Directrix
Résumé
In this note we present Hironaka's invariants as developed by Giraud: the ridge and the directrix. We give an effective definition and a functorial one and show their equivalence. The fruit is an effective algorithm that computes the additive generators of the "ridge", and the generators of its invariant algebra.
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2009_-_Computing_Hironaka_s_invariants_Ridge_And_Directrix.pdf (165.17 Ko)
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