In this paper, a generalized orthogonal decomposition theorem in Banach space is extended from linear subspace to nonlinear subset-sun set, and the conditions which are sufficient and necessary for an operator to be a metric projection operator and a metric projection operator to be a bounded linear operator are given.
In this paper, geometric method of Banach spaces and metric projection oprator are used to give three types of Moore-penrose metric generalized inverse and to prove the equivalance of the maximum Tseng-metric generalized inverse and Moore-Penrose metric generalized inverse.
At first,some equivalent conditions are proved by duality mapping. Then the linear property is studied in reflexive,smooth,rotund Banach spaces. It's shown the metric projection has directional derivative at every point of a closed convex subset in reflexive,smooth,rotund Banach spaces with H property.
It is proved that the metric projection operator onto a finite-dimensional Chebyshev subspaceM ?C [a, b] locally uniformly satisfies the Lipschitz condition on the SetC[a,b]M.
It is known that if C is a semi-Chebyshev closed and approximately compact set in a Banach space X, then the metric projector πC from X onto C is continuous.
We prove that the semismoothness of solutions to the Moreau-Yosida regularization of a lower semicontinuous proper convex function is implied by the semismoothness of the metric projector over the epigraph of the convex function.
In this paper we demonstrate the equivalence between the equation of the relativistic harmonic-oscillator model and Born's quantum metric operator eigenvalue equation.
Born's quantum metric operator and Yukawa's equation are used in the context of a recently proposed framework for quantum space-time to arrive at mass formulae for integral as well as half-integer spin exciton states.
A connection between string theory and the geometro-stochastic method of quantizing gravity is derived by applying Born's concept of quantum metric operator to massless exciton states.
In this paper,some proerties of metric projection are discussed in Banach spaces.At first,some equivalent conditions are proved by duality mapping.Then the linear property is studied in reflexive,smooth,rotund Banach spaces.It's shown the metric projection has directional derivative at every point of a closed convex subset in reflexive,smooth,rotund Banach spaces with H property.
The concept of Tseng-metric generalized inverse of linear operator in Banach spaces is introduced in this papert by Tseng Y.Y, a student of E.H. Moors, for Hilbert spaces generalizing that defined. Unlike the case in Hilbert spaces, the Tseng-metric generalized inverse of linear operator in Banach space is usually homogeneous, and nonlinear. By means of the dual mapping and geometric properties of Banach spaces, the necessary and sufficient condition for existence of the Tseng metric generalized inverse is ...
In this paper, geometric method of Banach spaces and metric projection oprator are used to give three types of Moore-penrose metric generalized inverse and to prove the equivalance of the maximum Tseng-metric generalized inverse and Moore-Penrose metric generalized inverse.