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arxiv: 1904.03645 · v3 · pith:QNWNX24Unew · submitted 2019-04-07 · 🧮 math.AG · math.AC· math.DS

On the Saito's basis and the Tjurina Number for Plane Branches

classification 🧮 math.AG math.ACmath.DS
keywords numberplanetjurinabasiscurvesaitoanswerbranches
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We introduce the concept of good Saito's basis for a plane curve $S$ and we explore it to obtain a formula for the minimal Tjurina number in a topological class. In particular, we present a positive answer for a question of Dimca and Greuel relating the Tjurina number and the Milnor number for a singular irreducible plane curve.

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