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Paper   IPM / M / 11475
School of Mathematics
  Title:   On the arithmetical rank of the edge ideals of some graphs
1.  F. Mohammadi
2.  D. Kiani
  Status:   To Appear
  Journal: Algebra Colloq.
  Supported by:  IPM
In this paper we compute the projective dimension of the edge ideals of graphs consisting of some cycles and some lines which are joint in a common vertex. Moreover, we show that for such graphs, the arithmetical rank equals the projective dimension. As an application we can compute the arithmetical rank for some homogenous monomial ideals.

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