1984/122/1

On line-symmetric graphs

Existence of measurable selectors and parametrizations for ${\displaystyle G_{\delta }}$-valued multifunctions

Homology with models

On embedding curves in two-dimensional polyhedra

On expandability of models of arithmetic and set theory to models of weak second-order theories

Smooth dendroids without ordinary points

A note on Robinson's non-negativity criterion

Applications of certain R-families

Fixed point sets of continuum-values mappings

Chainable continua and homeomorphisms of the plane onto itself