More on powers of singular cardinals
- Cite this article as:
- Shelah, S. Israel J. Math. (1987) 59: 299. doi:10.1007/BF02774143
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We give bounds for\(\aleph _\delta ^\aleph 1\) where cfδ=ℵ1, (∀a<δ)\(\aleph _\delta ^\aleph 0< \aleph _\delta \), in cases which previously remained opened, including the first such cardinal: theω1-th cardinal inCω=∩n<ωCn whereC0 is the cardinal andCn+1 the set of fixed points ofCn. No knowledge of earlier results is required. A subsequent work generalizing this was applied to many more cardinals ([Sh 7]).