English

A Graphical Representation of Rings via Automorphism Groups

Commutative Algebra 2010-03-02 v1 Rings and Algebras

Abstract

Let RR be a commutative ring with identity. We define a graph Γ\aut(R)\Gamma_{\aut}(R) on R R, with vertices elements of RR, such that any two distinct vertices x,yx, y are adjacent if and only if there exists σ\aut\sigma \in \aut such that σ(x)=y\sigma(x)=y. The idea is to apply graph theory to study orbit spaces of rings under automorphisms. In this article, we define the notion of a ring of type nn for n0n\geq 0 and characterize all rings of type zero. We also characterize local rings (R,M)(R,M) in which either the subset of units (1\neq 1 ) is connected or the subset M{0}M- \{0\} is connected in Γ\aut(R)\Gamma_{\aut}(R).

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Cite

@article{arxiv.1003.0174,
  title  = {A Graphical Representation of Rings via Automorphism Groups},
  author = {N. Mohan Kumar and Pramod K. Sharma},
  journal= {arXiv preprint arXiv:1003.0174},
  year   = {2010}
}

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