Abstract
Global co-stationarity of the ground model from an ℵ2-c.c. forcing which adds a new subset of ℵ1 is internally consistent relative to an ω1-Erdős hyperstrong cardinal and a sufficiently large measurable above.
Citation
Natasha Dobrinen. Sy-David Friedman. "Internal consistency and global co-stationarity of the ground model." J. Symbolic Logic 73 (2) 512 - 521, June 2008. https://doi.org/10.2178/jsl/1208359057
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