A Note Concerning Julia Set of Complex Iteration

For practical use,the fractal sets in 2nd dimensional and 3nd dimensional Euclidean Space are of most importance.This is why Julia sets are still of interest nowadays. Having extended the concept of filled Julia set of a complex iteration,one asserts that every triangle domain is the filled Julia set of certain complex iteration,then some comments are given. The paper serves as a primary step to explore how to construct the foundation of fractal analysis.