Hypothesis: HR 253:
\L o\'s' Theorem: If \(M=\langle A,R_j\rangle_{j\in J}\) is a relational system, \(X\) any set and \({\cal F}\) an ultrafilter in \({\cal P}(X)\), then \(M\) and \(M^{X}/{\cal F}\) are elementarily equivalent.
Conclusion: HR 371:
There is an infinite, compact, Hausdorff, extremally disconnected topological space. Morillon [1993].
List of models where hypothesis is true and the conclusion is false:
| Name | Statement |
|---|---|
| \(\cal M27\) Pincus/Solovay Model I | Let \(\cal M_1\) be a model of \(ZFC + V =L\) |
Code: 3
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