### The nonstationary ideal on $P_\kappa(\lambda)$ for $\lambda$ singular

by Matet and Shelah. [MtSh:869]

Let kappa be a regular uncountable cardinal and lambda > kappa a singular strong limit cardinal. We give a new characterization of the nonstationary subsets of P_kappa (lambda) and use this to prove that the nonstationary ideal on P_kappa (lambda) is nowhere precipitous.

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