On cuts in ultraproducts of linear orders I
classification
🧮 math.LO
keywords
thetakappalinearcardinalcardinalscasecofinalitycuts
read the original abstract
For an ultrafilter $D$ on a cardinal $\kappa,$ we wonder for which pair $(\theta_1, \theta_2)$ of regular cardinals, we have: for any $(\theta_1+\theta_2)^+-$saturated dense linear order $J, J^{\kappa}/ D$ has a cut of cofinality $(\theta_1, \theta_2).$ We deal mainly with the case $\theta_1, \theta_2 > 2^\kappa.$
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