Implications

We have the following indirect implication of form equivalence classes:

82 \(\Rightarrow\) 82
given by the following sequence of implications, with a reference to its direct proof:

Implication Reference
82 \(\Rightarrow\) 82 The independence of various definitions of finiteness, Levy, A. 1958, Fund. Math.

Here are the links and statements of the form equivalence classes referenced above:

Howard-Rubin Number Statement
82:

\(E(I,III)\) (Howard/Yorke [1989]): If \(X\) is infinite then \(\cal P(X)\) is Dedekind infinite. (\(X\) is finite \(\Leftrightarrow {\cal P}(X)\) is Dedekind finite.)

82:

\(E(I,III)\) (Howard/Yorke [1989]): If \(X\) is infinite then \(\cal P(X)\) is Dedekind infinite. (\(X\) is finite \(\Leftrightarrow {\cal P}(X)\) is Dedekind finite.)

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