arXiv · 2607.16563
On $2$-stationarity of $\mathcal{P}_{\kappa}\lambda$
Abstract
The notion of $n$-stationary subsets of $\mathcal{P}_\kappa \lambda$ for $n < \omega$ were introduced and studied by Cody, Lambie-Hanson \& Zhang \cite{CLHZ} and Torres \cite{T}. They proved that if $\kappa$ is supercompact, then $\mathcal{P}_\kappa \lambda$ is $n$-stationary in itself for all cardinals $\lambda \geq \kappa$ and all $n < \omega$. In this paper we prove that strong compactness of $\kappa$ does not imply the $2$-stationarity of $\mathcal{P}_\kappa \lambda$ for cardinals $\lambda > \kappa$. We also discuss Menas' Theorem for $1$-stationary and $2$-stationary subsets of $\mathcal{P}_\kappa \lambda$.
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Hiroshi Sakai, M. Catalina Torres. 2026-07-18. On $2$-stationarity of $\mathcal{P}_{\kappa}\lambda$. https://arxiv.org/abs/2607.16563
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