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361 Discussion: behaviour theories, can’t live with them, can’t live without them


Book ID
114401565
Publisher
Elsevier Science
Year
2007
Tongue
English
Weight
43 KB
Volume
10
Category
Article
ISSN
1440-2440

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New reals: Can live with them, can live
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We give a self-contained proof of the preservation theorem for proper countable support iterations known as "tools-preservation", "Case A" or "first preservation theorem" in the literature. We do not assume that the forcings add reals.