Notice of RetractionOn Subnormal Solutions of Higher Order Linear Periodic Differential Equations

Notice of Retraction

After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE´s Publication Principles.

We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.

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In this paper, we investigated the existence of subnormal solution and the growth properties of solutions for nth order periodic coefficient homogeneous linear differential equations f^(k)+[P_k-1(e^z)+Q_k-1(e^-z)]f^(k-1)+??????+[p₁(e^z)+Q₁(e^-z)]f+[P₀(e^z)+Q₀(e^-z)]f=0 (where P_j(z), Q_j(z) (j=0,??????, n-1)(n ?? 2) are polynomials and P₀ +Q₀ ??0 and its corresponding non-homogeneous equations, we proved the non- existence of subnormal solutions of homogeneous differential equations and the hype order of non-trivial solutions satisfied ??₂ (f ) =1 if there exists a 0 ?? s<k satisfies max {deg P_j} <deg P_s, max{deg Q_j} <deg Q_s.