The tree property at double successors of singular cardinals of\n uncountable cofinality with infinite gaps
Mohammad Golshani, Alejandro Poveda
Abstract
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Mohammad Golshani, Alejandro Poveda
Abstract
Open-access reader
Assuming the existence of a strong cardinal $\\kappa$, a weakly compact\ncardinal $\\lambda$ above it and $\\gamma > \\lambda,$ we force a generic\nextension in which $\\kappa$ is a singular strong limit cardinal of any given\ncofinality $\\delta$, $2^\\kappa\\geq \\gamma$ and such that the tree property\nholds at $\\kappa^{++}$.\n
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Assuming the existence of a strong cardinal $\\kappa$, a weakly compact\ncardinal $\\lambda$ above it and $\\gamma > \\lambda,$ we force a generic\nextension in which $\\kappa$ is a singular strong limit cardinal of any given\ncofinality $\\delta$, $2^\\kappa\\geq \\gamma$ and such that the tree property\nholds at $\\kappa^{++}$.\n
Key concepts: Cofinality, Uncountable set, Regular cardinal, Mathematics, Lambda, Property (philosophy), Extension (predicate logic), Tree (set theory)