Form equivalence class Howard-Rubin Number: 9
Statement: There is no subset \(A\) of the class of Dedekindfinite cardinals such that \(A\) under the usual cardinalordering is order isomorphic to \(\langle{\Bbb R},\le \rangle\).Tarski [1965], Jech [1973b] p 161 prob 6, and Note 94.
Howard-Rubin number: 9 F
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