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Yuanxiang Zhang

Associate professor of Institute of Applied Mathematics.

Email:@lzu.edu.cn

Ph.D.Lanzhou University, 2012, Mathematics

Biography

        I received my Bachelor’s and Master’s degrees in Applied Mathematics from Lanzhou University, China. In 2009, I started my doctoral study under the supervision of Prof. Chuli Fu at Lanzhou University and defended my PhD thesis in 2012. During my PhD studies I spent one year at the Warwick Mathematics Institute as a visiting student sponsored by the CSC, the collaborators were Prof. Andrew M. Stuart and Dr. Sergios Agapiou. From January 2013 till April 2017 I worked as a lecturer and from May till now as an associate professor at Lanzhou University.

Social experience

  • Teaching and guiding the situation of graduate students

  • Project results

  • Research interests

    Classical and Bayesian approach to inverse problems for PDEs in Mathematical Physics.

    Publications

  • [21]Zhang, Zhengqiang; Guo, Shimin; Zhang, Yuan-Xiang An iterative method based on Nesterov acceleration for identifying space-dependent source term in a time-fractional diffusion-wave equation. J. Comput. Appl. Math. 429 (2023), Paper No. 115214, 20 pp.
    [20]Zhang, Zhengqiang; Zhang, Yuan-Xiang A fast iterative method for identifying the radiogenic source for the helium production-diffusion equation. Appl. Math. Sci. Eng. 30 (2022), no. 1, 521–540.
    [19]Xue, Xuemin; Xiong, Xiangtuan; Zhang, Yuanxiang Two fractional regularization methods for identifying the radiogenic source of the helium production-diffusion equation. AIMS Math. 6 (2021), no. 10, 11425–11448.
    [18]Yan, X. B.; Zhang, Y. X.; Wei, T. Identify the fractional order and diffusion coefficient in a fractional diffusion wave equation. J. Comput. Appl. Math. 393 (2021), Paper No. 113497, 18 pp.
    [17]Zhang, Yun; Wei, Ting; Zhang, Yuan-Xiang Simultaneous inversion of two initial values for a time-fractional diffusion-wave equation. Numer. Methods Partial Differential Equations 37 (2021), no. 1, 24–43.
    [16] Yuan-Xiang Zhang, Junxiong Jia, Liang Yan. Bayesian approach to a nonlinear inverse problem for a time-space fractional diffusion equation. Inverse Problems, 2018, 34(12): 125002.
    [15] Liang Yan, Yuan-Xiang Zhang. Convergence analysis of surrogate-base methods for Bayesian inverse problems. Inverse Problems, 33(2017), No.12, 125001, 20pp. 
    [14] Yuan-Xiang Zhang, Liang Yan. The general a-posteriori truncation method and its application to radiogenic source identification for the Helium production-diffusion equation, Appl. Math. Model. 43 (2017), 126–138. 
    [13] Chu-Li Fu, Yun-Jie Ma, Yuan-Xiang Zhang, Fan Yang. A simple a-posteriori regularization method for solving the Cauchy problem for the Helmholtz equation with non-homogeneous Neumann data. Appl. Math. Model. 39 (2015), no. 14, 4103–4120. 
    [12] Sergios Agapiou, Andrew M. Stuart, Yuan-Xiang Zhang. Bayesian posterior contraction rates for linear severely ill-posed inverse problems. J. Inverse Ill-Posed Probl. 22 (2014), no. 3, 297–321. 
    [11] Yuan-Xiang Zhang, Chu-Li Fu, Yun-Jie Ma. An a-posteriori parameter choice rule for truncation regularization for solving backward parabolic problems. J. Comput. Appl. Math. 255 (2014), 150–160. 
    [10] Hao Cheng, Chu-Li Fu, Yuan-Xiang Zhang. An iteration method for stable analytic continuation. Appl. Math. Comput. 233 (2014), 203–213. 
    [ 9 ] Yuan-Xiang Zhang, Chu-Li Fu, Zhi-Liang Deng. An a-posteriori truncation method for some Cauchy problems associated with Helmholtz-type equation. Inverse Probl. Sci. Eng. 21 (2013), no. 7, 1151–1168. 
    [ 8 ] Chu-Li Fu, Yun-Jie Ma, Hao Cheng, Yuan-Xiang Zhang. The a posteriori Fourier method for solving the Cauchy problem for the Laplace equation with nonhomogeneous Neumann data, Applied Mathematical Modelling. Appl. Math. Model. 37 (2013), no. 14-15, 7764–7777. 
    [ 7 ] Chu-Li Fu, Yuan-Xiang Zhang, Hao Cheng, Yun-Jie Ma. The a-posteriori Fourier method for solving ill-posed problems.  Inverse Problems 28 (2012), no. 9, 095002, 26 pp. 
    [ 6 ] Chu-Li Fu, Yuan-Xiang Zhang, Hao Cheng, Yun-Jie Ma. Numerical analytic continuation on bounded domains.  Eng. Anal. Bound. Elem. 36 (2012), no. 4, 493–504. 
    [ 5 ] Yun-Jie Ma, Chu-Li Fu, Yuan-Xiang Zhang. Identification of un unknown source depending on both time and space variables by a variational method.  Appl. Math. Model. 36 (2012), no. 10, 5080–5090. 
    [ 4 ] Yun-Jie Ma, Chu-Li Fu, Yuan-Xiang Zhang. Solving a backward heat conduction problem by variational method.  Appl. Math. Comput. 219 (2012), no. 2, 624–634. 
    [ 3 ] Yuan-Xiang Zhang, Chu-Li Fu, Liang Yan. Approximate inverse method for stable analytic continuation in a strip domain. J. Comput. Appl. Math. 235 (2011), no. 9, 2979–2992. 
    [ 2 ] Zhi-Liang Deng, Chu-Li Fu, Xiao-Li Feng, Yuan-Xiang Zhang. A mollification regularization method for stable analytic continuation.  Math. Comput. Simulation 81 (2011), no. 8, 1593–1608. 
    [ 1 ] Yuan-Xiang Zhang, Chu-Li Fu, Zhi-Liang Deng. A conditional stability result for backward heat equation. (Chinese) J. Lanzhou Univ. Nat. Sci. 44 (2008), no. 2, 100–102.
  • Honor and Award

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