Are $\mathfrak a$ and $\mathfrak d$ your cup of tea? Revisited
Abstract
This is a revised version (of late 2020) of [Sh:700], which is arXiv:math/0012170 . First point is noting that the proof of Theorem 4.3 in [Sh:700], which says that the proof giving the consistency also gives . The proof uses a measurable cardinal and a c.c.c. forcing so it gives large and assumes a large cardinal. Second point is adding to the results of \S2,\S3 which say that (in \S3 with no large cardinals) we can force . We like to have . For this we allow in \S2,\S3 the sets to be uncountable; this requires non-essential changes. In particular, we replace usually by . Naturally we can deal with and similar invariants. Third we proofread the work again. To get we could have retained the countability of the member of the -s but the parameters would change with , well for a cofinal set of them; but the present seems simpler. We intend to continue in [Sh:F2009].
Cite
@article{arxiv.2108.03666,
title = {Are $\mathfrak a$ and $\mathfrak d$ your cup of tea? Revisited},
author = {Saharon Shelah},
journal= {arXiv preprint arXiv:2108.03666},
year = {2021}
}
Comments
revisited version of arXiv:math/0012170