Center for Research and Development in Mathematics and Applications, Department of Mathematics, University of Aveiro, Aveiro, Portugal. Department of Mathematics, Faculty of Science and Technology, ...
College of Mathematics and Physics, Guangxi Minzu University, Nanning, China. System theory, stochastic control, and differential methods for solving elliptic partial differential equations frequently ...
Abstract: In recent years, there has been an enormous interest in developing methods for the approximation of manifold-valued functions. In this paper, we focus on the manifold of symmetric ...
Abstract: Positive is the important hypotheses of many financial forecasting models, but the correlation coefficient matrix we get from actual samples are not always positive. Firstly, we introduced ...