%0 Journal Article
%T A weak dichotomy below E_1 \times E_3
%A Vladimir Kanovei
%J Mathematics
%D 2007
%I arXiv
%X If E is an equivalence relation Borel reducible to E_1 \times E_3 then either E is Borel reducible to the equality of countable sets of reals or E_1 is Borel reducible to E. The "either" case admits further strengthening.
%U http://arxiv.org/abs/0707.2706v1