New posts in Gn.General Topology

Which compact metrizable spaces have continuous choice functions for non-empty closed sets?

Is this subset of matrices contractible inside the space of non-conformal matrices?

Disjoint union of measures

Empty interior of union of cosets?

Is the lexicographic ordering on the unit square perfectly normal?

Question about additive subgroups of the real line and the density topology

Continuous functions taking uncountably many values countably often

Collared boundary of a non-metrizable manifold

An example of a "simple poset" which does not belong to a convex polytope

General topological space with closure operation as in Russian translation of Hausdorff's 1914 and 1927 Mengenlehre