Considering the class {ie48-01} of analytic functions {ie48-02} in the unit disk with am,n ε ℝ and the nonvanishing nth divided difference [F(z);z0, ⋯, zn] for all z0, ℝ, zn ∈ E we establish that {ie48-03}, where {ie48-04}. If n is an odd number then {ie48-05}.
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[1]
Kir’yatskiĭ E. G.(1961)Functions with Liet. Mat. Rink. 1 109-114
[2]
Kir’yatskiĭ E. G.(1963)th divided difference other than zero Liet. Mat. Rink. 3 55-60