摘要
推广了杨重骏、杨乐等证明的:若f为一超越整函数,n,k为非负整数且n≥2,则f(f(k)n唯一可能的Picard例外值是0这一结果;证明了当f(k)易为f的相当广泛的微分多项式时,相应结论仍成立。
Generalize a result obtained by Yang C.C. and Yang Le: Let f be a transcendental entire function, n,k be two non-negative integers with n≥2, then the only possible Picard Exceptional Value of f(f(k))n is zero, proved the above conclusion still holds when f(k) is replaced by differential polynomial of f of a rather wide kind.