Foundation item: Supported by the National Natural Science Foundation of Education Department of Sichuan Province(2002A031); Supported by the "11.5" Research and Study Programs of SWUST(06zx2116); Supported by the National Natural Science Foundation of China(10271122)
Suppose that function f(z) is transcendental and meromorphic in the plane. The aim of this work is to investigate the conditions in which differential monomials f(z)f(k)(z) takes any non-zero finite complex nu...
Let F be a family of mermorphic functions in a domain D, and let a, b, c be complex numbers, a ≠ b. If for each f ∈ F, the zeros of f-c are of multiplicity ≥ k + 1, and -↑Ef(k)(a) belong to -↑Ef (a), -↑Ef...