作者： Zhang, Zhongxi¹²;Shi, Fu-Gui¹;Li, Qingguo³;Wang, Kai²; （¹School of Mathematics and Statistics, Beijing Institute of Technology, Beijing, 100081, China;²School of Computer and Control Engineering, Yantai University, Yantai, 264005, Shandong, China;³College of Mathematics and Econometrics, Hunan University, Changsha, 410082, Hunan, China）

出处： Fuzzy Sets and Systems 2021 Vol.425 P18-33

摘要： In this paper, we generalize the concept of a monotone convergence space (also called a d-space) to the setting of a Q-cotopological space, where Q is ...

作者： Xi, Yingxia¹;Ji, Xia²³;Zhang, Shuo⁴; （¹School of Science, Nanjing University of Science and Technology, Nanjing, 210094, China;²School of Mathematics and Statistics, Beijing Institute of Technology, Beijing, 100081, China;³Beijing Key Laboratory on MCAACI, Beijing Institute of Technology, Beijing, 100081, China;⁴LSEC, ICMSEC, Academy of Mathematics and Systems Science, Chinese Academy of Sciences, Beijing, 100190, China）

出处： Numerical Mathematics 2021 Vol.14 No.4 P920-944

摘要： In this paper, we study the order reduced finite element method for the fourth order eigenvalue problems on multi-connected planar domains. Particular ...

作者： Wei, Xiaowei¹;Pang, Bin¹;Mi, Jusheng²; （¹Beijing Key Laboratory on MCAACI, School of Mathematics and Statistics, Beijing Institute of Technology, Beijing, 102488, China;²School of Mathematical Sciences, Hebei Normal University, Shijiazhuang, 050024, China）

出处： Information Sciences 2021 Vol.580 P283-310

摘要： Fuzzy rough approximation operators are the underlying concepts in fuzzy rough set theory. There are at least two approaches to develop these primary ...

作者： Gao, Xiaofen¹;Wang, Jialu¹;Zhang, Junyong¹;Zheng, Jiqiang²; （¹Department of Mathematics, Beijing Institute of Technology, Beijing, 100081, China;²Institute of Applied Physics and Computational Mathematics, Beijing, 100088, China）

出处： Journal of Differential Equations 2021 Vol.292 P70-89

摘要： We study the uniform weighted resolvent estimates of Schrödinger operator with scaling-critical electromagnetic potentials which, in particular, inclu ...

作者： Khan, Yousaf Ali¹³;Shan, Qingsong¹;Liu, Qianning¹;Abbas, Syed Zaheer²³; （¹School of Statistics, Jiangxi University of Finance and Economics, Nanchang, 330013, Jiangxi, China;²School of Mathematics and Statistics, Beijing Institute of Technology, Beijing, 100081, China;³Department of Mathematics and Statistics, Hazara University, Mansehra, Pakistan）

出处： Soft Computing 2021 Vol.25 No.15 P9677-9692

摘要： The copula is well-known for learning scale-free measures of dependence among variables and has invited much interest in recent years. At the very cor ...

作者： Qasim, Foukeea¹;Sun, Tianchuan²;Abbas, Syed Zaheer¹;Khan, Waqar Azeem³;Malik, Muhammad Yousaf⁴; （¹Department of Mathematics and Statistics, Hazara University Mansehra, Dhodial, 21120, Pakistan;²Qiuzhen College, Huzhou University, Huzhou, 313000, China;³School of Mathematics and Statistics, Beijing Institute of Technology Zhongguancun, Haidian, 100081, China;⁴Department of Mathematics, College of Sciences, King Khalid University, P. O. Box 9004, Abha, 61413, Saudi Arabia）

出处： International Journal of Modern Physics B 2021 Vol.35 No.18

摘要： This paper aims to investigate the time-dependent stagnation point flow of an Oldroyd-B fluid subjected to the modified Fourier law. The flow into a v ...

作者： Zhou, Ziwei¹;Bao, Jiguang¹;Wang, Bo²; （¹School of Mathematical Sciences, Beijing Normal University Laboratory of Mathematics and Complex Systems, Ministry of Education, Beijing, 100875, China;²School of Mathematics and Statistics, Beijing Key Laboratory on MCAACI, Beijing Institute of Technology, Beijing, 100081, China）

出处： Discrete and Continuous Dynamical Systems- Series A 2021 Vol.41 No.4 P1561-1578

摘要： In this paper, we establish the gradient and second derivative estimates for solutions to two kinds of parabolic Monge-Ampère equations in half-space ...

作者： Wang, Liang¹;Xiong, Chunguang¹;Yuan, Xinpeng²;Wu, Huibin¹; （¹Department of Mathematics, Beijing Institute of Technology, Beijing, 100081, China;²State Key Laboratory of Severe Weather, Chinese Academy of Meteorological Sciences, China Meteorological Administration, Beijing, 100081, China）

出处： Mathematics 2021 Vol.9 No.5 P1-12

摘要： The objective of this work is to study finite element methods for approximating the solution of convection equations on surfaces embedded in R3 . We p ...

作者： Wang, Bo¹; （¹School of Mathematics and Statistics, Beijing Institute of Technology, Beijing, 100081, China）

出处： Communications in Contemporary Mathematics 2021

摘要： We obtain a Liouville-type theorem for cylindrical viscosity solutions of fully nonlinear CR invariant equations on the Heisenberg group. As a by-prod ...

作者： Zhang, Shaoyu¹; （¹Beijing Key Laboratory on MCAACI, School of Mathematics and Statistics, Beijing Institute of Technology, Beijing, China）

出处： Journal of Intelligent and Fuzzy Systems 2021 Vol.40 No.6 P11915-11925

摘要： This paper introduces a special Galois connection combined with the wedge-below relation. Furthermore, by using this tool, it is shown that the catego ...