BETA ZEN
Goldstine theorem
Texto da Wikipédia (en), licença CC BY-SA. O BETARUBI mostra o verbete inteiro nesta página — a leitura não continua fora do site.
In functional analysis, a branch of mathematics, the Goldstine theorem, named after Herman Goldstine, is stated as follows:Goldstine theorem. Let be a Banach space, then the image of the closed unit ball under the canonical embedding into the closed unit ball of the bidual space is a weak*-dense subset.