Results 11 to 20 of about 244 (149)
On Specht's Theorem in UHF C⁎-algebras [PDF]
Journal of Functional Analysis, 2021 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Laurent W. Marcoux, Yuanhang Zhang
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AUTOMORPHISMS OF THE UHF ALGEBRA THAT DO NOT EXTEND TO THE CUNTZ ALGEBRA [PDF]
Journal of the Australian Mathematical Society, 2010 AbstractThe automorphisms of the canonical core UHF subalgebra ℱnof the Cuntz algebra 𝒪ndo not necessarily extend to automorphisms of 𝒪n. Simple examples are discussed within the family of infinite tensor products of (inner) automorphisms of the matrix algebrasMn.
CONTI, ROBERTO, ROBERTO CONTI
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Primitive Triangular UHF Algebras
Journal of Functional Analysis, 1998 The authors prove that a large class of triangular UHF algebras are primitive. There are cases where explicitly they give a faithful algebraically irreducible representation of the algebra on a separable Hilbert space. For other cases they follow an indirect way studying the prime ideal structure of the algebra. From this they obtain a characterization
Hudson, T.D, Katsoulis, E.G
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The Rohlin property for automorphisms of UHF algebras [PDF]
Journal für die reine und angewandte Mathematik (Crelles Journal), 1995 For an automorphism \(\alpha\) of a UHF algebra of type \(n^ \infty\) the Rohlin property is defined as follows: For any positive integer \(k\) there is a central sequence of families \(e^{(j)}_ i\), \(i= 0, 1, \dots, n^ k- 1\) of projections such that \(\sum_ i e^{(j)}_ i= 1\) and \(\|\alpha(e^{(j)}_ i)- e^{(j)}_{i+ 1}\|\to 0\) as \(j\to \infty ...
A., Kishimoto, Kishimoto, A.
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Triangular UHF algebras over arbitrary fields [PDF]
Proceedings of the American Mathematical Society, 1995 Let K be an arbitrary field. Let ( q n
R. L. Baker
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Journal of Functional Analysis, 1978 AbstractWe show that all uniformly hyperfinite C∗-algebras have Borel isomorphic spectra, and that the spectrum of each separable C∗-algebra not of type I contains a copy of this space as a Borel subset.
Pedersen, Gert K
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Extensions of unbounded ∗-derivations in UHF C∗-algebras
Journal of Functional Analysis, 1982 AbstractWe consider unbounded ∗-derivations δ in UHF-C∗-algebras A=(∪∞n=1An)−) with dense domain. If ϕn:A→An denotes the conditional expectations onto the finite type I factors An, then we introduce a weak-commutativity condition for δ and the sequence (ϑn). As a consequence of this condition on δ we establish the existence of an extension derivation δ′
Jørgensen, Palle E.T
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Journal of Sensors, Volume 2023, Issue 1, 2023., 2023 This paper mainly studies the positioning based on time of arrival and time difference of arrival. The quantity to be obtained is mainly time. Time of arrival measurement value can be obtained directly through symbolic timing synchronization, and its effective information can be obtained at the same time.
Songjian Bao +4 more
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High Voltage, Volume 7, Issue 6, Page 1185-1193, December 2022., 2022 Abstract This paper analyses the impact of square wave pulse voltage deadtime on the partial discharge (PD) and the lifetime of turn‐to‐turn insulation. A bipolar repetitive pulse voltage with a deadtime of 0–10 μs is produced using double half‐bridge solid‐state switches having push–pull technology controlled by a field‐programmable gate array.
Shakeel Akram +4 more
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Equivariant higher twisted K$K$‐theory of SU(n)$SU(n)$ for exponential functor twists
Journal of Topology, Volume 15, Issue 2, Page 896-949, June 2022., 2022 Abstract We prove that each exponential functor on the category of finite‐dimensional complex inner product spaces and isomorphisms gives rise to an equivariant higher (that is, non‐classical) twist of K$K$‐theory over G=SU(n)$G=SU(n)$. This twist is represented by a Fell bundle E→G$\mathcal {E}\rightarrow \mathcal {G}$, which reduces to the basic ...
David E. Evans, Ulrich Pennig
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