arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2007.01405math.OAmath.CVmath.FA
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Hardy-Toeplitz $C^*$ -代数自同构的刚性结果

Rigidity results for automorphisms of Hardy-Toeplitz $C^*$-algebras

Alexandru Chirvasitu

摘要:

我们证明了与有界对称域$D$相关的Hardy-Toeplitz代数$\mathcal{T}(D)$的自同构和同构的一些结果:$\mathcal{T}(D)$的稳定同构类决定了$D$(即使它是可约的),对于可约域$D=D_1\times\cdots \times D_s$,由$\mathcal{T}(D)$的自同构诱导的Shilov边界$\check{S}(D)$的自同构置换Shilov边界$\check{S}(D_i)$,与任意可解代数相比,$\mathcal{T}(D)$的自同构在其特征空间$\check{S}(D)$上是平凡的,在整个谱$\widehat{\mathcal{T}(D)}$上也是平凡的.

英文摘要:

We prove a number of results on the automorphisms of and isomorphisms between Hardy-Toeplitz algebras $\mathcal{T}(D)$ associated to bounded symmetric domains $D$: that the stable isomorphism class of $\mathcal{T}(D)$ determines $D$ (even when it is reducible), that for reducible domains $D=D_1\times\cdots \times D_s$ the automorphisms of the Shilov boundary $\check{S}(D)$ induced by those of $\mathcal{T}(D)$ permute the Shilov boundaries $\check{S}(D_i)$, and that by contrast to arbitrary solvable algebras, automorphisms of $\mathcal{T}(D)$ that are trivial on their character spaces $\check{S}(D)$ are trivial on the entire spectrum $\widehat{\mathcal{T}(D)}$.

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