Zobrazeno 1 - 2
of 2
pro vyhledávání: '"Tomasz Słonka"'
Publikováno v:
Topology and its Applications. 160:1439-1443
We prove that the relative rank r ( B ( X ) : C ( X ) ) of the semigroup of Borel mappings B ( X ) from X to X (with the composition of mappings as the semigroup operation) with respect to the semigroup of continuous functions C ( X ) from X to X is
Autor:
Tomasz Słonka
Publikováno v:
Colloquium Mathematicum. 127:233-242
We show that if n is a positive integer and 2א0 ≤ אn, then there exists a real constant c > 0 and functions f1, . . . , fn+1:R → R such that (f1, . . . , fn+1)(R) = Rn+1 and for every x ∈ Rn there exists an i ∈ {1, . . . , n + 1} and a b