Abstract
We investigate two closely related partial orders of trees on ωω: the full-splitting Miller trees and the infinitely often equal trees, as well as their corresponding σ-ideals. The former notion was considered by Newelski and Rosłanowski while the latter involves a correction of a result of Spinas. We consider some Marczewski-style regularity properties based on these trees, which turn out to be closely related to the property of Baire, and look at the dichotomies of Newelski–Rosłanowski and Spinas for higher projective pointclasses. We also provide some insight concerning a question of Fremlin whether one can add an infinitely often equal real without adding a Cohen real, which was recently solved by Zapletal.
Lingua originale | Inglese |
---|---|
pagine (da-a) | 1491-1506 |
Numero di pagine | 16 |
Rivista | Annals of Pure and Applied Logic |
Volume | 168 |
Numero di pubblicazione | 8 |
DOI | |
Stato di pubblicazione | Pubblicato - ago 2017 |
Pubblicato esternamente | Sì |