In this paper, we show that the isometry between the unit spheres of certain normed space and its dual space can be extended to a real linear isometry on the whole space.
It is demonstrated that there is only a two dimensional Fourier dual space in the problem of scattering-inverse scattering.
指出在散射一逆散射问题中,只存在两维传氏对偶空间。
In this paper, our aim is to discuss the extension of an extremal monotonic linear functional in the algebraic dual space of a partially ordered linear space.