When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Descriptive set theory; 1. Equivalence relations; 4. Better topologies; 6. Model theory and the Vaught conjecture; 7. Actions with Borel orbit equivalence relations; 8. Definable cardinality; References.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.