%0 Journal Article
%T Tests ид la Hurewicz dans le plan
%A Dominique Lecomte
%J Mathematics
%D 2007
%I arXiv
%X We give, for some Borel sets of a product of two Polish spaces, including the Borel sets with countable sections, a Hurewicz-like characterization of those which cannot become a transfinite difference of open sets by changing the two Polish topologies.
%U http://arxiv.org/abs/0710.0130v1