Abstract
For any infinite BA A, h-cofA is equal to each of:
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sup{|T|: T ⊆ A, T well-founded};
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sup{κ: there is an a ∈ κ A such that for all α, β < κ, if α < β then a α ≱ a β }.
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© 1996 Springer Basel AG
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Monk, J.D. (1996). Hereditary cofinality. In: Cardinal Invariants on Boolean Algebras. Progress in Mathematics. Birkhäuser, Basel. https://doi.org/10.1007/978-3-0346-0334-8_19
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DOI: https://doi.org/10.1007/978-3-0346-0334-8_19
Publisher Name: Birkhäuser, Basel
Print ISBN: 978-3-0346-0333-1
Online ISBN: 978-3-0346-0334-8
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