dorsal/arxiv
View SchemaGraded Betti numbers of the Jacobian algebra and total Tjurina numbers of plane curves
| Authors | Alexandru Dimca, Gabriel Sticlaru |
|---|---|
| Categories | |
| ArXiv ID | 2601.08583vv3 |
| URL | https://arxiv.org/abs/2601.08583 |
| License | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ |
Abstract
In this paper we compute an explicit closed formula for the total Tjurina number $\tau(C)$ of a reduced projective plane curve $C$ in terms of the graded Betti numbers of the corresponding Jacobian algebra. This formula allows a completely new view point on the classical upper bounds for the total Tjurina number $\tau(C)$ of a plane curve $C$ given by A. du Plessis and C. T. C. Wall. This approach yields in particular a new necessary condition for a set of positive integers to be the graded Betti numbers of the Jacobian algebra of a reduced plane curve.
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"abstract": "In this paper we compute an explicit closed formula for the total Tjurina number $\\tau(C)$ of a reduced projective plane curve $C$ in terms of the graded Betti numbers of the corresponding Jacobian algebra. This formula allows a completely new view point on the classical upper bounds for the total Tjurina number $\\tau(C)$ of a plane curve $C$ given by A. du Plessis and C. T. C. Wall. This approach yields in particular a new necessary condition for a set of positive integers to be the graded Betti numbers of the Jacobian algebra of a reduced plane curve.",
"arxiv_id": "2601.08583",
"authors": [
"Alexandru Dimca",
"Gabriel Sticlaru"
],
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"math.AG",
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],
"license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
"title": "Graded Betti numbers of the Jacobian algebra and total Tjurina numbers of plane curves",
"url": "https://arxiv.org/abs/2601.08583",
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