%0 Journal Article %T What is a system of parameters? %A Louiza Fouli %A Craig Huneke %J Mathematics %D 2010 %I arXiv %X In this paper we discuss various refinements and generalizations of a theorem of Sankar Dutta and Paul Roberts. Their theorem gives a criterion for $d$ elements in a $d$-dimensional Noetherian Cohen-Macaulay local ring to be a system of parameters, i.e., to have height $d$. We chiefly remove the assumption that the ring be Cohen-Macaulay and discuss similar theorems. %U http://arxiv.org/abs/1003.3046v1