Hypothesis: HR 361:
In \(\Bbb R\), the union of a denumerable number of analytic sets is analytic. G. Moore [1982], pp 181 and 325.
Conclusion: HR 243:
Every principal ideal domain is a unique factorization domain.
List of models where hypothesis is true and the conclusion is false:
| Name | Statement |
|---|---|
| \(\cal N31\) Läuchli's Model IV | The set \(A\) is denumerable |
Code: 3
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