A space in which compacta
are uniformly regular Gδ is said to be c-stratifiable. This concept turns out to
be important in many reasons: c-stratifiability is a necessary and sufficient
condition for regular wN-spaces to be Nagata, for regular wγ-spaces to be γ and
for semimetrizable spaces to be K-semimetrizable. As applications, it is
shown that a completely regular pseudocompact space is metrizable and that
K-semimetrizable spaces are characterized by having semi-developments with the
3-link property.