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A fully nonlinear free boundary problem arising from optimal dividend and risk control model

  • Author Bio: E-mail address: C. Guan: 316346917@qq.com; E-mail address: F. Yi: fhyi@scnu.edu.cn; E-mail address: X. Chen: xchen53@gmail.com
  • * Corresponding author

    * Corresponding author 
The first author is supported by NNSF of China (No.11626117 and No.11601163), NSF of Guangdong Province of China (No.2016A030307008). The second author is supported by NNSF of China (No.11771158 and No.71871071), NSF of Guangdong Province of China (No.2016A030313448, No.2017A030313397 and No.2018B030311004).
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  • Focusing on the problem arising from a stochastic model of risk control and dividend optimization techniques for a financial corporation, this work considers a parabolic variational inequality with gradient constraint

    $\min\Big\{v_t-\max\limits_{0\leq a\leq1}\Big(\frac{1}{2}\sigma^2a^2v_{xx}+\mu av_x\Big)+cv,\;v_x-1\Big\} = 0.$

    Suppose the company's performance index is the total discounted expected dividends, our objective is to choose a pair of control variables so as to maximize the company's performance index, which is the solution to the above variational inequality under certain initial-boundary conditions. The main effort is to analyse the properties of the solution and two free boundaries arising from the above variational inequality, which we call dividend boundary and reinsurance boundary.

    Mathematics Subject Classification: Primary: 35R35, 93E20; Secondary: 91B70, 91G80.


    \begin{equation} \\ \end{equation}
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  • Figure 1.  Penalty function

    Figure 2.  Dividend free boundary

    Figure 3.  Reinsurance free boundary

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