Non-reflection of the bad set for \(\check{I}_\theta[\lambda]\) and pcf

DOI10.1007/s10474-013-0344-6zbMath1324.03014arXiv1206.2048OpenAlexW2152552932MaRDI QIDQ2259370

Saharon Shelah

Publication date: 3 March 2015

Published in: Acta Mathematica Hungarica (Search for Journal in Brave)

Full work available at URL: https://arxiv.org/abs/1206.2048

zbMATH Keywords

pcfstationary setsnon-reflection

Mathematics Subject Classification ID

Other combinatorial set theory (03E05) Ordered sets and their cofinalities; pcf theory (03E04)

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USUBA’S PRINCIPLE CAN FAIL AT SINGULAR CARDINALS ⋮ Quite free complicated abelian groups, pcf and black boxes

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