The filled-in Julia set K(f){\displaystyle \ K(f)} of a polynomial f{\displaystyle \ f} is :
The filled-in Julia set K(f){\displaystyle \ K(f)} of a polynomial f{\displaystyle \ f} is defined as the set of all points z{\displaystyle z\,} of the dynamical plane that have bounded orbit with respect to f{\displaystyle \ f}
of a polynomial 
is : of a polynomial is defined as the set of all points 
of the dynamical plane that have bounded orbit with respect to 