Title of article :
Whatʹs the difference?
Original Research Article
Author/Authors :
James H. Schmerl، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 1998
Abstract :
The set of all difference sets of natural numbers is a ∑11-complete set of reals.
Keywords :
Difference set , Borel set
Journal title :
Annals of Pure and Applied Logic
Journal title :
Annals of Pure and Applied Logic
