Chang's Conjecture, The Weak Reflection Principle and the Tree Property at ω₂
classification
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keywords
omegachangconjectureprinciplereflectionweakaronszajnequivalent
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We prove that a strong version of Chang's Conjecture, equivalent to the Weak Reflection Principle at $\omega_2$, together with $2^\omega=\omega_2$, imply there are no $\omega_2$-Aronszajn trees.
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