A note on a question of R. Pol concerning light maps

Details A note on a question of R. Pol concerning light maps A note on a question of R. Pol concerning light maps

2000-04-20

arxiv.org/abs/math/0004135v1

Mathematics

General Topology

4 pages. Topology Appl. (to appear)

Scientific paper

Let f:X -> Y be an onto map between compact spaces such that all point-inverses of f are zero-dimensional. Let A be the set of all functions u:X -> I=[0,1] such that $u[f^\leftarrow(y)]$ is zero-dimensional for all y in Y. Do almost all maps u:X -> I, in the sense of Baire category, belong to A? H. Toru\'nczyk proved that the answer is yes if Y is countable-dimensional. We extend this result to the case when Y has property C.

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