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arXiv 1502.05966math.OAmath.LO
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Kirchberg核嵌入定理的算子空间和算子系统模拟

Operator space and operator system analogs of Kirchberg's nuclear embedding theorem

Martino Lupini

摘要:

Oikhberg引入的Gurarij算子空间$\mathbb{NG}$是在$1$ -正合算子空间和完全等距线性映射范畴中唯一可分的近似内射的$1$ -正合算子空间.证明了可分算子空间$X$是核的当且仅当存在线性完全等距$φ:X\rightarrow \mathbb{NG}$和从$\mathbb{NG}$到$φ$的值域上的完全压缩投影.这可以看作是基尔希贝格核嵌入定理的算子空间模拟。我们还建立了涉及Gurarij算子系统$\mathbb{GS}$的Kirchberg核嵌入定理的自然算子系统模拟。

英文摘要:

The Gurarij operator space $\mathbb{NG}$ introduced by Oikhberg is the unique separable $1$-exact operator space that is approximately injective in the category of $1$-exact operator spaces and completely isometric linear maps. We prove that a separable operator space $X$ is nuclear if and only if there exist a linear complete isometry $φ:X\rightarrow \mathbb{NG}$ and a completely contractive projection from $\mathbb{NG}$ onto the range of $φ$. This can be seen as the operator space analog of Kirchberg's nuclear embedding theorem. We also establish the natural operator system analog of Kirchberg's nuclear embedding theorem involving the Gurarij operator system $\mathbb{GS}$.

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