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arXiv math/0605515math.OA
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无限投影的变形

Deformations of infinite projections

Etienne Blanchard

摘要:

设$A=(A_x)$是紧T2空间$X$上的$C^*$ -代数的(半)连续域,$p=(p_x)$是$A$中的投影,使得每个$p_x\in A_x$真无限($x\in X$).若域$A$是上半连续的,则$p$是真无限的.然而,如果域是下半连续的,则$p$可以是有限的。

英文摘要:

Let $A=(A_x)$ be a (semi-)continuous field of $C^*$-algebras over a compact Hausdorff space $X$ and let $p=(p_x)$ be a projection in $A$ such that each $p_x\in A_x$ is properly infinite ($x\in X$). Then $p$ is properly infinite if the field $A$ is upper semi-continuous. However, $p$ can be finite if the field is lower semi-continuous.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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