The intuitionistic fuzzy set (IFS) based on fuzzy theory,which is of high efficiency to solve the fuzzy problem, has bee......

本文用开球去刻画分形几何中开集条件（OSC）的开集,并得出一些结论。这些结论对一类函数迭代系统（ISF）是否满足开集条件,只需通过验证是......