Let C be a cantor ternary set
If $x,y \in C,$ then obviously $x-y \in [-1,1]$
Conversely I want to prove that
if $w \in [-1,1],$ then there exists $x,y \in C$ such that $x-y=w$
How to prove this problem?
Let C be a cantor ternary set
If $x,y \in C,$ then obviously $x-y \in [-1,1]$
Conversely I want to prove that
if $w \in [-1,1],$ then there exists $x,y \in C$ such that $x-y=w$
How to prove this problem?