Some representations of midconvex set-valued functions.
Some theorems on measurable and continuous selections and some applications
Strongly paracompact metrizable spaces
Strongly paracompact metrizable spaces are characterized in terms of special S-maps onto metrizable non-Archimedean spaces. A similar characterization of strongly metrizable spaces is obtained as well. The approach is based on a sieve-construction of "metric"-continuous pseudo-sections of lower semicontinuous mappings.
Subopen multifunctions and selections
Sur les sélecteurs des multifonctions