徐嫚，女，汉族，1989年11月生，中共党员，甘肃瓜州县人。2019年6月在西北师范大学获理学博士学位，师从马如云教授。现为西北师范大学数学与统计学院副教授。主要从事微分方程和差分方程相关问题的研究，与导师在《Discrete Contin. Dyn. Syst. Ser. B》《J. Math. Anal. Appl.》《Mediterr. J. Math.》和《Electron. J. Qual. Theory Differ. Equ.》等SCI期刊合作发表论文十余篇。现主持西北师范大学博士科研启动金1项，参与国家自然科学基金面上项目和地区科学基金项目各1项。在校期间获国家奖学金4次，获2019年甘肃省优秀博士毕业论文。

代表性论文：
[1] Ruyun Ma，Man Xu，Zhiqian He，Nonconstant positive radial solutions for Neumann problem involving the mean extrinsic curvature operator，J. Math. Anal. Appl.，484 (2020)，1-13.
[2] Man Xu，Ruyun Ma，Existence of infinitely many radial nodal solutions for a Dirichlet problem involving mean curvature operator in Minkowski space，Electron. J. Qual. Theory Differ. Equ.，27(2020)，1-14.
[3] Man Xu，Ruyun Ma，Positive solutions for some discrete semipositone problems via bifurcation theory，Adv. Difference Equ.，66 (2020)，1-16.
[4] Ruyun Ma, Man Xu, Multiple positive solutions of the Dirichlet problem for the prescribed mean curvature equation in Minkowski space，Discrete Contin. Dyn. Syst. Ser. B，24(6) (2019)，1-14.
[5] Ruyun Ma, Man Xu, Dongliang Yan, Discrete non-selfadjoint second order two-point problems at resonance，Mediterr. J. Math.，(2019) 16:54.
[6] Ruyun Ma, Man Xu, Positive rotationally symmetric solutions for a Dirichlet problem involving the higher mean curvature operator in Minkowski space，J. Math. Anal. Appl.，460(1) (2018)，33-46.
[7] Ruyun Ma, Man Xu, S-shaped connected component for a nonlinear Dirichlet problem involving mean curvature operator in one-dimension Minkowski space，Bull. Korean Math. Soc.，55(6) (2018)，1891-1908.
[8] Man Xu, Ruyun Ma, Discrete Neumann boundary value problem for a nonlinear equation with singular phi-Laplacian，Adv. Difference Equ.，9 (2018)，1-12.
[9] Man Xu, Ruyun Ma, Jin Wen, Lower and upper solutions method for a problem of an elastic beam whose one end is simply supported and the other end is sliding clamped，Turkish J. Math.，42(3) (2018)，1018-1030.