Regularity of Villadsen algebras and characters on their central sequence algebras

Christensen, Mark

doi:10.7146/math.scand.a-104840

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Introduction1

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2021

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“…In section 3 we develop all the machinery needed to get Theorem 3.12. This part was initiated some time ago as a collaboration with M. Christensen, and some results in it already appeared in his PhD-thesis [9]; though, they have never been published in an article before.…”

Section: Introductionmentioning

confidence: 99%

Stable Elements and Property (S)

Bosa¹

2021

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We study the relation (and differences) between stability and Property (S) in the simple and stably finite framework. This leads us to characterize stable elements in terms of its support, and study these concepts from different sides : hereditary subalgebras, projections in the multiplier algebra and order properties in the Cuntz semigroup. We use these approaches to show both that cancellation at infinity on the Cuntz semigroup just holds when its Cuntz equivalence is given by isomorphism at the level of Hilbert right-modules, and that different notions as Regularity, ωcomparison, Corona Factorization Property, property R, etc.. are equivalent under mild assumptions.

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Section: Introductionmentioning

confidence: 99%