English

On the Calculation of gl.dim$G^{\mathbb{N}}(A)$ and gl.dim$\widetilde{A}$ by Using Gr\"obner Bases

Rings and Algebras 2008-05-07 v1

Abstract

Let A=K<X1,...,Xn>/<G>A=K< X_1,...,X_n> /< {\cal G}> be a KK-algebra defined by a finite Gr\"obner basis G{\cal G}. It is shown how to use the Ufnarovski graph Γ(LM(G))\Gamma ({\bf LM}({\cal G})) and the graph of nn-chains ΓC(LM(G))\Gamma_{\rm C}({\bf LM}({\cal G})) to calculate gl.dimGN(A)G^{\mathbb{N}}(A) and gl.dimA~\widetilde{A}, where GN(A)G^{\mathbb{N}}(A), respectively A~\widetilde{A}, is the associated N\mathbb{N}-graded algebra of AA, respectively the Rees algebra of AA with respect to the N\mathbb{N}-filtration FAFA of AA induced by a weight N\mathbb{N}-grading filtration of K<X1,...,Xn>K< X_1,...,X_n>.

Keywords

Cite

@article{arxiv.0805.0686,
  title  = {On the Calculation of gl.dim$G^{\mathbb{N}}(A)$ and gl.dim$\widetilde{A}$ by Using Gr\"obner Bases},
  author = {Huishi Li},
  journal= {arXiv preprint arXiv:0805.0686},
  year   = {2008}
}

Comments

14 pages