Abstract
If λ = x+ then diamond on λ holds. Moreover, if if λ = x+= 2X and S⊆{δ <λ : cf (s) ≠ cf(x)} is stationary, then s holds. Earlier this was known only under additional assumptions on xand/or S.
Original language | English |
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Pages (from-to) | 2151-2161 |
Number of pages | 11 |
Journal | Proceedings of the American Mathematical Society |
Volume | 138 |
Issue number | 6 |
DOIs | |
State | Published - Jun 2010 |