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arXiv 0906.4196math.FA
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巴拿赫格的Riesz同构的Banach-Stone定理

A Banach-Stone theorem for Riesz isomorphisms of Banach lattices

Jin Xi Chen, Zi Li Chen, Ngai-Ching Wong

摘要:

设$X$和$Y$是紧Hausdorff空间,$E$和$F$是巴拿赫格.设$C(X,E)$表示$X$上所有连续$E$值函数的Banach格,并赋予点序和上范数.证明了若存在Riesz同构$\mathnormalΦ: C(X,E)\to C(Y,F)$使得$\mathnormalΦf$在$Y$上非零当且仅当$f$在$X$上非零,则$X$同胚于$Y$,且$E$ Riesz同构于$F$ .在这种情况下,$\mathnormalΦ$可以写为加权复合算子:$\mathnormalΦ f(y)=\mathnormalΠ(y)(f(φ(y)))$,其中$φ$是从$Y$到$X$的同胚,而$\mathnormalΠ(y)$是从$E$到$F$的Riesz同构,对于$Y$中的每个$y$。这推广了最近得到的一些已知结果。

英文摘要:

Let $X$ and $Y$ be compact Hausdorff spaces, and $E$, $F$ be Banach lattices. Let $C(X,E)$ denote the Banach lattice of all continuous $E$-valued functions on $X$ equipped with the pointwise ordering and the sup norm. We prove that if there exists a Riesz isomorphism $\mathnormalΦ: C(X,E)\to C(Y,F)$ such that $\mathnormalΦf$ is non-vanishing on $Y$ if and only if $f$ is non-vanishing on $X$, then $X$ is homeomorphic to $Y$, and $E$ is Riesz isomorphic to $F$. In this case, $\mathnormalΦ$ can be written as a weighted composition operator: $\mathnormalΦ f(y)=\mathnormalΠ(y)(f(φ(y)))$, where $φ$ is a homeomorphism from $Y$ onto $X$, and $\mathnormalΠ(y)$ is a Riesz isomorphism from $E$ onto $F$ for every $y$ in $Y$. This generalizes some known results obtained recently.

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