主要从事凸几何分析方面研究，擅长运用调和分析工具。
发表论文：
[1] D. Ma, B. He, Estimates for the extremal sections of lp-balls, J. Math. Anal. Appl., 2011, 376(2): 725-731. [pdf]
[2] A. Koldobsky, D. Ma, Stability and slicing inequalities for intersection bodies, Geom. Dedicata, 2013, 162(1): 325-335. [pdf]
[3] D. Ma, Asymmetric anisotropic fractional Sobolev norms, Arch. Math., 2014, 103(2): 167-175. [pdf]
[4] D. Ma, Real-valued valuations on Sobolev spaces, Sci. China Math., 2016, 59(5): 921-934. [pdf]
[5] J. Li, D. Ma, Laplace transforms and valuations, J. Funct. Anal., 2017, 272(2): 738-758. [pdf]
[6] C. Zeng, D. Ma, SL(n) covariant vector valuations on polytopes, Trans. Amer. Math. Soc., 2018, 370(12): 8999-9023. [pdf]
[7] D. Ma, Moment matrices and SL(n) equivariant valuations on polytopes, Int. Math. Res. Not., 2021, 2021(14): 10469-10489. [pdf]
[8] D. Ma, W. Wang, LYZ matrices and SL(n) contravariant valuations on polytopes, Canad. J. Math., 2021, 73(2): 383-398. [pdf]
[9] J. Li, D. Ma, W. Wang, SL(n) contravariant vector valuations, Discrete Comput. Geom., 2022, 67(4): 1211-1228. [pdf]