Quasi-normal Family of Meromorphic Functions Whose Certain Type of Differential Polynomials Have No Zeros |
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Authors: | Chang Jian Ming |
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Institution: | 1.School of Mathematics and Statistics, Changshu Institute of Technology, Changshu, 215500, P. R. China ;2.School of Mathematical Sciences, Qufu Normal University, Qufu, 273165, P. R. China ; |
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Abstract: | Acta Mathematica Sinica, English Series - Define the differential operators ?n for n ∈ ? inductively by ?1 f](z)= f (z) and $${\phi _{n + 1}}f](z) = f(z){\phi _n}f](z) + {d... |
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