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arXiv 1302.0475math.OAmath.FA
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关于Toeplitz代数的等距扩张

On The Extension of the Toeplitz Algebra by Isometries

T. A. Grigoryan, E. V. Lipacheva, V. H. Tepoyan

摘要:

引入了半群\mathbb{Z}_+的π-扩张的概念,研究了Toeplitz代数的等距算子扩张.我们证明了当Toeplitz代数的作用不可约时,所有这样的扩张生成相同的代数,即Toeplitz代数没有非平凡的扩张。并给出了Toeplitz代数在其表示可约的情况下的非平凡扩张的例子。

英文摘要:

We introduce the notion of π-extension of the semigroup \mathbb{Z}_+ and study the extensions of the Toeplitz algebras by isometric operators. We show that when the action of the Toeplitz algebra is irreducible all such extensions generate the same algebra, i.e. there are no non-trivial extensions of the Toeplitz algebra. Also we provide the examples of the non-trivial extensions of the Toeplitz algebra in case its representation is reducible.

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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