2 papers
math.GN2025
An Infinite Library
Klaas Pieter Hart
The purpose of this note is to describe a space that is regular but not completely regular, but only barely so: all closed sets are -sets and every singleton is a zero-set.
math.GN2025
, , and
Will Brian, Alan Dow, Klaas Pieter Hart
Let . The natural projection , which sends to , induces a projection mapping $Ï^*: \mathbb{M}…