, Volume 152, Issue 3, pp 207-215

Distinguishing groupwise density numbers

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We show that \({\frak g}<{\frak g}_f\) is consistent, where \({\frak g}\) is the groupwise density number and \({\frak g}_f\) is the groupwise density number for ideals. This answers a question of Heike Mildenberger.

Partially supported by Grant-in-Aid for Scientific Research (C) 17540116, Japan Society for the Promotion of Science.