研究一类退化Hessian商方程Neumann问题,通过选取恰当的辅助函数,利用极大值原理和基本对称函数的性质,在条件f1/k−l∈C1(Ω¯×ℝn)下得到该方程当f依赖于x,Du时解的全局梯度估计。In this paper, degenerate Hessian quotient ...研究一类退化Hessian商方程Neumann问题,通过选取恰当的辅助函数,利用极大值原理和基本对称函数的性质,在条件f1/k−l∈C1(Ω¯×ℝn)下得到该方程当f依赖于x,Du时解的全局梯度估计。In this paper, degenerate Hessian quotient equations with Neumann problem has studied. By choosing suitable auxiliary functions, using the maximum principle and the properties of basic symmetric functions, with the f1/k−l∈C1(Ω¯×ℝn)condition, the global gradient estimation for the admissible solution of the equations with dependent on x and Du has obtained.展开更多
Hessian matrices are square matrices consisting of all possible combinations of second partial derivatives of a scalar-valued initial function. As such, Hessian matrices may be treated as elementary matrix systems of ...Hessian matrices are square matrices consisting of all possible combinations of second partial derivatives of a scalar-valued initial function. As such, Hessian matrices may be treated as elementary matrix systems of linear second-order partial differential equations. This paper discusses the Hessian and its applications in optimization, and then proceeds to introduce and derive the notion of the Jaffa Transform, a new linear operator that directly maps a Hessian square matrix space to the initial corresponding scalar field in nth dimensional Euclidean space. The Jaffa Transform is examined, including the properties of the operator, the transform of notable matrices, and the existence of an inverse Jaffa Transform, which is, by definition, the Hessian matrix operator. The Laplace equation is then noted and investigated, particularly, the relation of the Laplace equation to Poisson’s equation, and the theoretical applications and correlations of harmonic functions to Hessian matrices. The paper concludes by introducing and explicating the Jaffa Theorem, a principle that declares the existence of harmonic Jaffa Transforms, which are, essentially, Jaffa Transform solutions to the Laplace partial differential equation.展开更多
文摘研究一类退化Hessian商方程Neumann问题,通过选取恰当的辅助函数,利用极大值原理和基本对称函数的性质,在条件f1/k−l∈C1(Ω¯×ℝn)下得到该方程当f依赖于x,Du时解的全局梯度估计。In this paper, degenerate Hessian quotient equations with Neumann problem has studied. By choosing suitable auxiliary functions, using the maximum principle and the properties of basic symmetric functions, with the f1/k−l∈C1(Ω¯×ℝn)condition, the global gradient estimation for the admissible solution of the equations with dependent on x and Du has obtained.
文摘Hessian matrices are square matrices consisting of all possible combinations of second partial derivatives of a scalar-valued initial function. As such, Hessian matrices may be treated as elementary matrix systems of linear second-order partial differential equations. This paper discusses the Hessian and its applications in optimization, and then proceeds to introduce and derive the notion of the Jaffa Transform, a new linear operator that directly maps a Hessian square matrix space to the initial corresponding scalar field in nth dimensional Euclidean space. The Jaffa Transform is examined, including the properties of the operator, the transform of notable matrices, and the existence of an inverse Jaffa Transform, which is, by definition, the Hessian matrix operator. The Laplace equation is then noted and investigated, particularly, the relation of the Laplace equation to Poisson’s equation, and the theoretical applications and correlations of harmonic functions to Hessian matrices. The paper concludes by introducing and explicating the Jaffa Theorem, a principle that declares the existence of harmonic Jaffa Transforms, which are, essentially, Jaffa Transform solutions to the Laplace partial differential equation.
