supported by the National Natural Science Foundations of China(No.61179031).
In this paper,we study the periodic solutions to a type of differential delay equations with 2 k-1 lags.The 4 k-periodic solutions are obtained by using the variational method and the method of Kaplan-Yorke coupling s...
H.Sun is supported by NSFC(61179031);J.Wang is supported by General Project of Science and Technology Plan of Beijing Municipal Education Commission(KM202010037003).
Suppose that A and B are two positive-definite matrices,then,the limit of(A^p/2B^pA^p/2)1/p as p tends to 0 can be obtained by the well known Lie-Trotter formula.In this article,we generalize the usual product of matr...
National Science and Technology Major Project of China(Grant No.2016YFF02030012);National Natural Science Foundation of China(Grant No.61401058);partially supported by National Natural Science Foundation of China(Grant No.61179031);Natural Science Foundation of Liaoning Province(Grant No.20180550112);supported by JSPS Grant-in-Aid for Scientific Research(Grant No.16KT0024);the MEXT“Top Global University Project”;Waseda University Grant for Special Research Projects(Grant Nos.2019C-179,2019E-036);Waseda University Grant Program for Promotion of International Joint Research。
In this paper, the Riemannian gradient algorithm and the natural gradient algorithm are applied to solve descent direction problems on the manifold of positive definite Hermitian matrices, where the geodesic distance ...
Supported by Natural Science Foundations of China(Grant No.61179031 and 61401058)
Geometric structures of a manifold of positive definite Hermite matrices are considered from the viewpoint of information geometry.A Riemannian metric is defined and dual α-connections are introduced.Then the fact th...
Sponsored by Program for Changjiang Scholars and Innovative Research Team in University ( IRT1005 );the National Natural Science Founda-tions of China ( 61171195 and 61179031);Program for New Century Excellent Talents in University ( NCET-12-0042)
The investigation of novel signal processing tools is one of the hottest research topics in modern signal processing community. Among them, the algebraic and geometric signal processing methods are the most powerful t...