Abstract:
Several results on the topology of the space of $k$-flats in $\mathbb R^n$ similar to the Borsuk-Ulam theorem on coverings of a sphere and a ball are proved. Some corollaries on common transversals for families of subsets of $\mathbb R^n$ and on measure partitions by hyperplanes are deduced.
Bibliography: 22 titles.
Keywords:Borsuk-Ulam theorem, common transversals, Helly-type theorems.