The 16th Northeast Asia Standards Cooperation Forum was held in South Korea from July 3 to 5,2017,which was attended by about one hundred representatives from SAC,Japan and South Korea.During the forum,CJK Standing Co...The 16th Northeast Asia Standards Cooperation Forum was held in South Korea from July 3 to 5,2017,which was attended by about one hundred representatives from SAC,Japan and South Korea.During the forum,CJK Standing Committees,China and Japan cooperation talks,China and ROK sub-committees and CJK展开更多
This paper is a brief survey of our recent study on the connection between two parts of Hilbert′s 16th problem and equivariant bifurcation problem. We hope to understand the following questions: can we use the period...This paper is a brief survey of our recent study on the connection between two parts of Hilbert′s 16th problem and equivariant bifurcation problem. We hope to understand the following questions: can we use the periodic solution family of ( m-1) degree planar Hamiltonian systems with Z q equivariant (or D q equivariant) symmetry to realize some schemes of ovals for planar algebraic curves? On the contrary, if an algebraic curve of degree m has maximal number of branches of ovals (it is called M -curve), can we make his all ovals become limit cycles of a planar polynomial system? What schemes of distribution of limit cycles can be realized by polynomial system.展开更多
Location:Grand-Epoch-City,Beijing,ChinaDate:19-22 October 2007The 16th Asian Congress of Surgery,the biennial congress of the Asian Surgical Association(ASA),will be held onFriday-Monday,19-22 October 2007 at Grand Ep...Location:Grand-Epoch-City,Beijing,ChinaDate:19-22 October 2007The 16th Asian Congress of Surgery,the biennial congress of the Asian Surgical Association(ASA),will be held onFriday-Monday,19-22 October 2007 at Grand Epoch City,Beijing,China,in conjunction with the 3rd ChineseSurgical Week.The Congress is co-organised by the ASA and the Chinese Surgical Society(CSS)of the ChineseMedical Association.展开更多
There exists a property “structural stability” for “4-dimensional canards” which is a singular-limit solution in a slow-fast system with a bifurcation parameter. It means that the system includes the possibility t...There exists a property “structural stability” for “4-dimensional canards” which is a singular-limit solution in a slow-fast system with a bifurcation parameter. It means that the system includes the possibility to have some critical values on the bifurcation parameter. Corresponding to these values, the pseudo-singular point, which is a singular point in the time-scaled-reduced system should be changed to another one. Then, the canards may fly to another pseudo-singular point, if possible. Can the canards fly? The structural stability gives the possibility for the canards flying. The precise reasons why happen are described in this paper.展开更多
文摘The 16th Northeast Asia Standards Cooperation Forum was held in South Korea from July 3 to 5,2017,which was attended by about one hundred representatives from SAC,Japan and South Korea.During the forum,CJK Standing Committees,China and Japan cooperation talks,China and ROK sub-committees and CJK
文摘This paper is a brief survey of our recent study on the connection between two parts of Hilbert′s 16th problem and equivariant bifurcation problem. We hope to understand the following questions: can we use the periodic solution family of ( m-1) degree planar Hamiltonian systems with Z q equivariant (or D q equivariant) symmetry to realize some schemes of ovals for planar algebraic curves? On the contrary, if an algebraic curve of degree m has maximal number of branches of ovals (it is called M -curve), can we make his all ovals become limit cycles of a planar polynomial system? What schemes of distribution of limit cycles can be realized by polynomial system.
文摘Location:Grand-Epoch-City,Beijing,ChinaDate:19-22 October 2007The 16th Asian Congress of Surgery,the biennial congress of the Asian Surgical Association(ASA),will be held onFriday-Monday,19-22 October 2007 at Grand Epoch City,Beijing,China,in conjunction with the 3rd ChineseSurgical Week.The Congress is co-organised by the ASA and the Chinese Surgical Society(CSS)of the ChineseMedical Association.
文摘There exists a property “structural stability” for “4-dimensional canards” which is a singular-limit solution in a slow-fast system with a bifurcation parameter. It means that the system includes the possibility to have some critical values on the bifurcation parameter. Corresponding to these values, the pseudo-singular point, which is a singular point in the time-scaled-reduced system should be changed to another one. Then, the canards may fly to another pseudo-singular point, if possible. Can the canards fly? The structural stability gives the possibility for the canards flying. The precise reasons why happen are described in this paper.
