Hypothesis: HR 291:
For all infinite \(x\), \(|x!|=|x^x|\).
Conclusion: HR 3: \(2m = m\): For all infinite cardinals \(m\), \(2m = m\).
List of models where hypothesis is true and the conclusion is false:
| Name | Statement |
|---|---|
| \(\cal M29\) Pincus' Model II | Pincus constructs a generic extension \(M[I]\) of a model \(M\) of \(ZF +\) class choice \(+ GCH\) in which \(I=\bigcup_{n\in\omega}I_n\), \(I_{-1}=2\) and \(I_{n+1}\) is a denumerable set of independent functions from \(\omega\) onto \(I_n\) |
Code: 3
Comments: