Uncountable Borel Sets

Here I promised post some tough stuff. Well, I meant some fruits of our recent research by Hyttinen, Friedman and I. I will not go into the subject here, just post a link to the forthcoming paper. There is an introduction which is supposed to be understandable by a wide class of people; also definitions of these special Borel sets are accessible; see Section II.3. The text is written by me using [tex]\LaTeX[/tex].

Here is the PDF file