In this paper the characterizations of conjugate hulls Ψ(S), φ(S), T(S) and θ(S) on a Brandt semigroup S are given. By using these results we can prove that T(S) is self-conjugate in Ψ(S) for a Brandt semigroup S.
M stepJacobi预处理共轭梯度法被用于求解源于自共轭椭圆偏微分方程的有限元或有限差分逼近的大型稀疏线性系统。这种方法的应用基础是相应的Jacobi迭代收敛。研究结果表明:偶数步的Jacobi预处理共轭梯度法较相邻奇数步的Jacobi预处理...M stepJacobi预处理共轭梯度法被用于求解源于自共轭椭圆偏微分方程的有限元或有限差分逼近的大型稀疏线性系统。这种方法的应用基础是相应的Jacobi迭代收敛。研究结果表明:偶数步的Jacobi预处理共轭梯度法较相邻奇数步的Jacobi预处理共轭梯度法更有效,步数越多,收敛速度越快。展开更多
A wide range of research topics in different fields of physics can be addressed by study of the self-conjugate N = Z nuclei, such as the np pairing, isospin symmetry, the rp-process and the properties of the electrowe...A wide range of research topics in different fields of physics can be addressed by study of the self-conjugate N = Z nuclei, such as the np pairing, isospin symmetry, the rp-process and the properties of the electroweak interaction. This contribution focuses on the spectroscopy of N^Z nuclei towards ^(100)Sn. The latest results on the isomeric decay spectroscopy of N^Z nuclei below ^(100)Sn, such as the N = Z +2 nuclides ^(94)Pd and ^(96)Ag, the N = Z nuclide ^(96)Cd and so on are highlighted. New opportunities in in-beam γ spectrscopy of N^Z nuclei towards ^(100)Sn, like ^(90)Rh and ^(92)Pd, with radioactive ion beams are discussed.展开更多
This paper studies a class of Hille equation. A formula for solutions of a class of Hille equation is given. Under some suitable conditions the oscillation and nonoscillation of a class of Hille equation are establish...This paper studies a class of Hille equation. A formula for solutions of a class of Hille equation is given. Under some suitable conditions the oscillation and nonoscillation of a class of Hille equation are established. Our results generalize the known Hille＇s ones.展开更多
1 Introduction Let Ω be a bounded symmetric domain in the complex vector space C<sup>n</sup>, 0∈Ω, with Bergman-Silov boundary b, Γ the group of holomorphic automorphisms of Ω and Γ<sub>0</s...1 Introduction Let Ω be a bounded symmetric domain in the complex vector space C<sup>n</sup>, 0∈Ω, with Bergman-Silov boundary b, Γ the group of holomorphic automorphisms of Ω and Γ<sub>0</sub> its isotropy group. It is known that Ω is circular and star-shaped with respect to 0 and that b is circular. The group Γ<sub>0</sub> is transitive on b and b has a unique normalized Γ<sub>0</sub>-invariant measure σ with σ（b）= 1. Hua constructed by group representation theory a system {φ<sub>k<sub>v</sub></sub>}展开更多
We have proposed previously a method for constructing self-conjugate Hamiltonians Hh in the h-representation with a flat scalar product to describe the dynamics of Dirac particles in arbitrary gravitational fields. In...We have proposed previously a method for constructing self-conjugate Hamiltonians Hh in the h-representation with a flat scalar product to describe the dynamics of Dirac particles in arbitrary gravitational fields. In this paper, we prove that, for block-diagonal metrics, the Hamiltonians Hh can be obtained, in particular, using “reduced” parts of Dirac Hamiltonians, i.e. expressions for Dirac Hamiltonians derived using tetrad vectors in the Schwinger gauge without or with a few summands with bispinor connectivities. Based on these results, we propose a modified method for constructing Hamiltonians in the h-representation with a significantly smaller amount of required calculations. Using this method, here we for the first time find self-conjugate Hamiltonians for a number of metrics, including the Kerr metric in the Boyer-Lindquist coordinates, the Eddington-Finkelstein, Finkelstein-Lemaitre, Kruskal, Clifford torus metrics and for non-stationary metrics of open and spatially flat Friedmann models.展开更多
On the basis of the paoers[3—7],this paper study the monotonicity problems for the positive semidefinite generalized inverses of the positive semidefinite self-conjugate matrices of quaternions in the Lowner partial ...On the basis of the paoers[3—7],this paper study the monotonicity problems for the positive semidefinite generalized inverses of the positive semidefinite self-conjugate matrices of quaternions in the Lowner partial order,give the explicit formulations of the monotonicity solution sets A{1;≥,T_1;≤B^(1)}and B{1;≥,T_2≥A^(1)}for the(1)-inverse,and two results of the monotonicity charac teriaztion for the(1,2)-inverse.展开更多
The Cauchy problem for the nonlinear wave equation with a critical potential type of damping coefficient（1＋│x│）-1 and a nonlinearity │u│p-1u is studied.The total energy decay estimates of the global solutions a...The Cauchy problem for the nonlinear wave equation with a critical potential type of damping coefficient（1＋│x│）-1 and a nonlinearity │u│p-1u is studied.The total energy decay estimates of the global solutions are obtained by using multiplier techniques to establish identity ddtE（t）＋F（t）=0 and skillfully selecting f（t）,g（t）,h（t）when the initial data have a compact support.Using the similar method,the Cauchy problem for the nonlinear wave equation with a critical potential type of damping coefficient（1＋│x│＋t）-1 and a nonlinearity │u│p-1u is studied,similar solutions are obtained when the initial data have a compact support.展开更多
基金This work is supported by National Natural Science Foundation of China
文摘In this paper the characterizations of conjugate hulls Ψ(S), φ(S), T(S) and θ(S) on a Brandt semigroup S are given. By using these results we can prove that T(S) is self-conjugate in Ψ(S) for a Brandt semigroup S.
基金Hundred Talents Program of Chinese Academy of Sciences and National Natural Science Foundation of China(11405224,11435014)
文摘A wide range of research topics in different fields of physics can be addressed by study of the self-conjugate N = Z nuclei, such as the np pairing, isospin symmetry, the rp-process and the properties of the electroweak interaction. This contribution focuses on the spectroscopy of N^Z nuclei towards ^(100)Sn. The latest results on the isomeric decay spectroscopy of N^Z nuclei below ^(100)Sn, such as the N = Z +2 nuclides ^(94)Pd and ^(96)Ag, the N = Z nuclide ^(96)Cd and so on are highlighted. New opportunities in in-beam γ spectrscopy of N^Z nuclei towards ^(100)Sn, like ^(90)Rh and ^(92)Pd, with radioactive ion beams are discussed.
文摘This paper studies a class of Hille equation. A formula for solutions of a class of Hille equation is given. Under some suitable conditions the oscillation and nonoscillation of a class of Hille equation are established. Our results generalize the known Hille＇s ones.
文摘1 Introduction Let Ω be a bounded symmetric domain in the complex vector space C<sup>n</sup>, 0∈Ω, with Bergman-Silov boundary b, Γ the group of holomorphic automorphisms of Ω and Γ<sub>0</sub> its isotropy group. It is known that Ω is circular and star-shaped with respect to 0 and that b is circular. The group Γ<sub>0</sub> is transitive on b and b has a unique normalized Γ<sub>0</sub>-invariant measure σ with σ（b）= 1. Hua constructed by group representation theory a system {φ<sub>k<sub>v</sub></sub>}
文摘We have proposed previously a method for constructing self-conjugate Hamiltonians Hh in the h-representation with a flat scalar product to describe the dynamics of Dirac particles in arbitrary gravitational fields. In this paper, we prove that, for block-diagonal metrics, the Hamiltonians Hh can be obtained, in particular, using “reduced” parts of Dirac Hamiltonians, i.e. expressions for Dirac Hamiltonians derived using tetrad vectors in the Schwinger gauge without or with a few summands with bispinor connectivities. Based on these results, we propose a modified method for constructing Hamiltonians in the h-representation with a significantly smaller amount of required calculations. Using this method, here we for the first time find self-conjugate Hamiltonians for a number of metrics, including the Kerr metric in the Boyer-Lindquist coordinates, the Eddington-Finkelstein, Finkelstein-Lemaitre, Kruskal, Clifford torus metrics and for non-stationary metrics of open and spatially flat Friedmann models.
文摘On the basis of the paoers[3—7],this paper study the monotonicity problems for the positive semidefinite generalized inverses of the positive semidefinite self-conjugate matrices of quaternions in the Lowner partial order,give the explicit formulations of the monotonicity solution sets A{1;≥,T_1;≤B^(1)}and B{1;≥,T_2≥A^(1)}for the(1)-inverse,and two results of the monotonicity charac teriaztion for the(1,2)-inverse.
基金The National Natural Science Foundation of China(No.10771032)
文摘The Cauchy problem for the nonlinear wave equation with a critical potential type of damping coefficient（1＋│x│）-1 and a nonlinearity │u│p-1u is studied.The total energy decay estimates of the global solutions are obtained by using multiplier techniques to establish identity ddtE（t）＋F（t）=0 and skillfully selecting f（t）,g（t）,h（t）when the initial data have a compact support.Using the similar method,the Cauchy problem for the nonlinear wave equation with a critical potential type of damping coefficient（1＋│x│＋t）-1 and a nonlinearity │u│p-1u is studied,similar solutions are obtained when the initial data have a compact support.
