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A FORCING NOTION COLLAPSING $\aleph _3 $ AND PRESERVING ALL OTHER CARDINALS

Published online by Cambridge University Press:  21 December 2018

DAVID ASPERÓ
DAVID ASPERÓ*
Affiliation:
SCHOOL OF MATHEMATICS UNIVERSITY OF EAST ANGLIA NORWICH, NR4 7TJ, UKE-mail:d.aspero@uea.ac.uk
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Abstract

I construct, in ZFC, a forcing notion that collapses $\aleph _3 $ and preserves all other cardinals. The existence of such a forcing answers a question of Uri Abraham from 1983.

Keywords

03E40collapsing ℵ3Bamgartner clubstwo-type chains of modelspartial square sequences
Type
Articles
Information
The Journal of Symbolic Logic , Volume 83 , Issue 4 , December 2018 , pp. 1579 - 1594
Copyright
Copyright © The Association for Symbolic Logic 2018 

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References

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