1981/111/1

Continuous selections and countable sets

Ultraparacompactness in certain Pixley-Roy hyperspaces

On some test spaces in dimension theory

On the dimension of increments of Tychonoff spaces

The cohomological dimension of the ordered set of real numbers equals three

The space of maximal convex sets

Plane indecomposable continua no composant of which is accessible at more than one point

A characterization of well-orders

On contractible fans