Extensively treated by Robertson, Tweddle, Yeomans, Perez Carerras, and Bonet in the 1980s, the barrelled countable enlargement problem may be stated as follows: Let E be a barrelled locally convex space with EЈ / E\*. Is there an / -dimensional subspace M of E\* transverse to EЈ such that E endowed
Cardinals of countable cofinality and eventual domination
✍ Scribed by Marion Scheepers
- Publisher
- Springer Netherlands
- Year
- 1994
- Tongue
- English
- Weight
- 802 KB
- Volume
- 11
- Category
- Article
- ISSN
- 0167-8094
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📜 SIMILAR VOLUMES
If a cardinal Ä1, regular in the ground model M , is collapsed in the extension N to a cardinal Ä0 and its new coÿnality, , is less than Ä0, then, under some additional assumptions, each cardinal ¿ Ä1 less than cc(P where f : → Ä1 is an unbounded mapping, then N is a | | = Ä0-minimal extension. Thi
## Abstract Given a regular uncountable cardinal κ and a cardinal λ > κ of cofinality ω, we show that the restriction of the non‐stationary ideal on __P__~κ~(λ) to the set of all __a__ with \documentclass{article}\usepackage{amssymb}\begin{document}\pagestyle{empty}$\mathrm{cf}(\sup (a\cap \kappa))