关注我们：

solidot新版网站常见问题，请点击这里查看。

A note on $G_{\delta}$ ideals of compact sets. (arXiv:1807.00995v1 [math.LO])

来源于:arXiv
Solecki has shown that a broad natural class of $G_{\delta}$ ideals of compact sets can be represented through the ideal of nowhere dense subsets of a closed subset of the hyperspace of compact sets. In this note we show that the closed subset in this representation can be taken to be closed upwards. 查看全文>>