Affiliation: | 1.Kunming University of Science and Technology, Kunming, 650504, China ;2.PetroChina Research Institute of Petroleum Exploration and Development, Beijing, 100083, China ;3.LSEC and NCMIS, Academy of Mathematics and Systems Science, Beijing, 100085, China ;4.Department of Mathematics, Penn State University, University Park, PA, USA ;5.School of Mathematics and Computational Science, Xiangtan University, Hunan, 411105, China ;6.Guangdong Provincial Engineering Technology Research Center for Data Science, Guangzhou, 510631, Guangdong, China ;7.Department of Mathematics, Tufts University, Medford, MA, 02155, USA ; |