This non-implication,
Form 204 \( \not \Rightarrow \)
Form 214,
whose code is 4, is constructed around a proven non-implication as follows:
Hypothesis | Statement |
---|---|
Form 204 | <p> For every infinite \(X\), there is a function from \(X\) onto \(2X\). </p> |
Conclusion | Statement |
---|---|
Form 152 | <p> \(D_{\aleph_{0}}\): Every non-well-orderable set is the union of a pairwise disjoint, well orderable family of denumerable sets. (See <a href=""notes/note-27">note 27</a> for \(D_{\kappa}\), \(\kappa\) a well ordered cardinal.) </p> |
The conclusion Form 204 \( \not \Rightarrow \) Form 214 then follows.
Finally, the
List of models where hypothesis is true and the conclusion is false:
Name | Statement |
---|---|
\(\cal M2\) Feferman's model | Add a denumerable number of generic reals to the base model, but do not collect them |