Zheng Zhang’s research while affiliated with Guizhou Normal University and other places

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Publications (1)


On the growth of solutions of second order linear differential equations with extremal coefficients
  • Article
  • Full-text available

February 2013

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74 Reads

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22 Citations

Acta Mathematica Sinica

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Peng Cheng Wu

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Zheng Zhang

In this paper, we consider the differential equation f″ +A(z)f′ +B(z)f = 0, where A and B ≢ 0 are entire functions. Assume that A is extremal for Yang’s inequality, then we will give some conditions on B which can guarantee that every non-trivial solution f of the equation is of infinite order.

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Citations (1)


... Then every nontrivial solution f of the equation (1) has infinite order. This is a hot research object and a lot of works have sprung up, such as [7,11,15,21,[23][24][25][31][32][33]. Our main purpose is continue to study the above question, try to find conditions which A(z), B(z) should satisfy to ensure that nontrivial solution of (1) has infinite order. ...

Reference:

The infinite growth of solutions of second order linear complex differential equations with completely regular growth coefficient
On the growth of solutions of second order linear differential equations with extremal coefficients

Acta Mathematica Sinica