New posts in Descriptive Set Theory

A simpler proof that compact sets have cardinality continuum?

Topological spaces with too many open sets

A rare property of Hausdorff spaces

Is it inconsistent for a model of set theory to contain its own first order theory?

Woodin on Posner-Robinson for the hyperjump and sharp

When can we reach a real by forcing?

Does Turing determinacy imply full determinacy?

Pathological behavior of Borel sets?

Meager subspaces of a Banach space and weak-* convergence

Generalizations of the Tietze extension theorem (and Lusin's theorem)