In this paper, we introduce a class of holomorphic Banach spaces NK of functions on the unit ball B of Cn. We develop the necessary and sufficient condition for NK(B) spaces to be non-trivial and we discuss the nestin...In this paper, we introduce a class of holomorphic Banach spaces NK of functions on the unit ball B of Cn. We develop the necessary and sufficient condition for NK(B) spaces to be non-trivial and we discuss the nesting property of NK(B)?spaces. Also, we obtain some characterizations of functions with Hadamard gaps in NK(B) spaces. As a consequence, we prove a necessary and sufficient condition for that NK(B) spaces coincides with the Beurling-type space.展开更多
In this paper, we study the inertial manifolds for a class of the Kirchhoff-type equations with strongly damped terms and source terms. The inertial manifold is a finite dimensional invariant smooth manifold that cont...In this paper, we study the inertial manifolds for a class of the Kirchhoff-type equations with strongly damped terms and source terms. The inertial manifold is a finite dimensional invariant smooth manifold that contains the global attractor, attracting the solution orbits by the exponential rate. Under appropriate assumptions, we firstly exert the Hadamard’s graph transformation method to structure a graph norm of a Lipschitz continuous function, and then we prove the existence of the inertial manifold by showing that the spectral gap condition is true.展开更多
This paper considers the long-time behavior for a system of coupled wave equations of higher-order Kirchhoff type with strong damping terms. Using the Hadamard graph transformation method, we obtain the existence of t...This paper considers the long-time behavior for a system of coupled wave equations of higher-order Kirchhoff type with strong damping terms. Using the Hadamard graph transformation method, we obtain the existence of the inertial manifold while such equations satisfy the spectral interval condition.展开更多
电力系统静态电压稳定边界(static voltage stability boundary,SVSB)对于判断电压稳定性、评估电压稳定裕度具有重要的指示作用,因此,快速准确地计算SVSB对于电网安全稳定运行具有重要意义。电力系统作为一个超高维多变量的复杂非线性...电力系统静态电压稳定边界(static voltage stability boundary,SVSB)对于判断电压稳定性、评估电压稳定裕度具有重要的指示作用,因此,快速准确地计算SVSB对于电网安全稳定运行具有重要意义。电力系统作为一个超高维多变量的复杂非线性系统,其电压稳定边界本质上是某一拓扑结构下所能维持电源和负荷功率平衡的极限电压所构成的非线性高维边界。因此,将SVSB考虑为高维场景下的电压稳定超曲面,提出计算电压稳定边界的新方法。首先,利用多维全纯嵌入法(multidimensional holomorphic embedding method,MDHEM)求得节点电压的多变量幂级数(multivariate power series,MPS)表达式;然后,基于柯西-阿达马定理,推导并证明电压稳定边界与节点电压幂级数前后项系数之间的解析关系,并通过理论证明将所提出的方法从单维推广到高维场景;接着,基于推导的SVSB解析表达式,提出高维电压稳定边界计算与电压稳定性快速评估方法;最后,在IEEE 14节点、新英格兰39节点和IEEE 118节点系统中验证所提方法的有效性。展开更多
文摘In this paper, we introduce a class of holomorphic Banach spaces NK of functions on the unit ball B of Cn. We develop the necessary and sufficient condition for NK(B) spaces to be non-trivial and we discuss the nesting property of NK(B)?spaces. Also, we obtain some characterizations of functions with Hadamard gaps in NK(B) spaces. As a consequence, we prove a necessary and sufficient condition for that NK(B) spaces coincides with the Beurling-type space.
文摘In this paper, we study the inertial manifolds for a class of the Kirchhoff-type equations with strongly damped terms and source terms. The inertial manifold is a finite dimensional invariant smooth manifold that contains the global attractor, attracting the solution orbits by the exponential rate. Under appropriate assumptions, we firstly exert the Hadamard’s graph transformation method to structure a graph norm of a Lipschitz continuous function, and then we prove the existence of the inertial manifold by showing that the spectral gap condition is true.
文摘This paper considers the long-time behavior for a system of coupled wave equations of higher-order Kirchhoff type with strong damping terms. Using the Hadamard graph transformation method, we obtain the existence of the inertial manifold while such equations satisfy the spectral interval condition.
