Polish group actions and effectivity

2011/04/09 by Majcher-Iwanow, Barbara
#03C70 #03E15 #FOS: Mathematics #Logic (math.LO)

paper · doi:10.48550/arxiv.1104.1681

Abstract

We extend the result of Nadel describing the relationship between approximations of canonical Scott sentences and admissible sets to the general case of orbit equivalence relations induced on an arbitrary Polish space by a Polish group action.

Related

• Polish group actions and admissible sets
• Local operations and eventually open actions
• Orbit cardinalities
• Borel Globalizations of Partial Actions of Polish Groups
• Hjorth Analysis of General Polish Group Actions