Form equivalence class Howard-Rubin Number: 0
Statement:
If a set \(S\) is hereditarily countable (that is, every \(y\in TC(S)\) is countable) then the rank of \(S\) is \(<\omega_2\).
Howard-Rubin number: 0 T
Citations (articles):
Jech [1982]
On hereditarily countable sets
Connections (notes):
References (books):
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