Universal flows and automorphisms of P(ω)/fin

We prove that for every countable discrete group G , there is a G -flow on ω * that has every G -flow of weight ≤ ℵ 1 as a quotient. It follows that, under the Continuum Hypothesis, there is a universal G -flow of weight ≤ c . Applying Stone duality, we deduce that, under CH, there is a trivial auto...

Ausführliche Beschreibung

Bibliographische Detailangaben

Veröffentlicht in:	Israel journal of mathematics 2019-08, Vol.233 (1), p.453-500, Article 453
1. Verfasser:	Brian, Will
Format:	Artikel
Sprache:	eng
Schlagworte:	Algebra Analysis Applications of Mathematics Automorphisms Group Theory and Generalizations Mathematical and Computational Physics Mathematics Mathematics and Statistics Quotients Theoretical Weight
Online-Zugang:	Volltext
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!