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arXiv 2302.07877math.OAmath-phmath.FAmath.MPmath.QA
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环面谱截断的Gromov--Hausdorff收敛性

Gromov--Hausdorff Convergence of Spectral Truncations for Tori

Malte Leimbach, Walter D. van Suijlekom

AI总结:

该研究探讨环面谱截断对应的算子系统,利用Schur与Fourier乘子的关系及谱Fejér核的性质,证明其态空间在Gromov--Hausdorff意义下收敛于配备Monge--Kantorovich距离的环面Borel概率测度空间,并补充了相关算子系统的结构分析。

摘要:

我们研究与环面谱截断相关的算子系统。我们证明,当这些算子系统的态空间配备Connes距离函数时,它们在Gromov--Hausdorff意义下收敛于配备Monge--Kantorovich距离的环面上所有Borel概率测度构成的空间。Schur乘子与Fourier乘子之间的关系在证明中起到关键作用。在此过程中,我们引入了谱Fejér核并证明它是一个好核,这使得我们能够得到充分的估计,以证明态空间的预期收敛性。最后,我们对相关算子系统进行了结构分析,包括C*-包络和传播数,并给出了关于对偶算子系统的一个观察结果。

英文摘要:

We consider operator systems associated to spectral truncations of tori. We show that their state spaces, when equipped with the Connes distance function, converge in the Gromov--Hausdorff sense to the space of all Borel probability measures on the torus equipped with the Monge--Kantorovich distance. A crucial role will be played by the relationship between Schur and Fourier multipliers. Along the way, we introduce the spectral Fejér kernel and show that it is a good kernel. This allows to make the estimates sufficient to prove the desired convergence of state spaces. We conclude with some structure analysis of the pertinent operator systems, including the C*-envelope and the propagation number, and with an observation about the dual operator system.

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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