摘要： This problem was put forward by H.S.Shapiro on Bull.London Math.Soc.16(1984)490 -517,numbered 6.88[1].The original description likes following: ... The equation is met whenf is and only is identical.
中图分类号:
陈志国. On a Conjecture of Shapiro's[J]. 数学季刊, 1994, 9(2): 37-39.
Chen Zhiguo. On a Conjecture of Shapiro's[J]. Chinese Quarterly Journal of Mathematics, 1994, 9(2): 37-39.
