9
9.0

Jan 3, 2019
01/19

by
Nordic Summer School in Mathematics (1988 : Sønderborg, Denmark)

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458 pages ; 25 cm

Topics: Schrödinger operator -- Congresses, Schrödinger operator, Hamilton-Operator, Sonderburg

Two band members who alternate between home studio setups. We also work alone (as "Operator 1" (& "Zieglar") and "Operator 2"). We are still discovering new sounds and textures for incorporation within our respective projects. Fond of a wide variety of musical styles not necessarily the electronic masters. Now Available ************* Check out the ambient side of Operator 1, under "Zieglar" on the IUMA site. Please also check out our friend...

Topic: Operator

9
9.0

Sep 17, 2020
09/20

by
Center for Accessible Technology in Sign

movies

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ASL vocabulary

Topic: operator

Folkscanomy Miscellaneous

321
321

Dec 30, 2015
12/15

by
Kopachevskii, N. D; Krein, Selim G

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Operator Approach to Linear Problems of Hydrodynamics: Volume 2: Nonself-adjoint Problems for Viscous Fluids Author: Nikolay D. Kopachevsky, Selim G. Krein Published by Birkhäuser Basel ISBN: 978-3-0348-9425-8 DOI: 10.1007/978-3-0348-8063-3 Table of Contents: Introduction Motion of Bodies with Cavities Completely Filled with Viscous Incompressible Fluids Motion of Viscous Fluids in Open Containers Oscillations of Capillary Viscous Fluids Oscillations of Partially Dissipative Hydrosystems...

Topics: Mathematics, Operator theory, Mathematics, Operator theory

In this paper represented method for edge detection and represent different operator using edge detection. In this paper the edge detection is use two technique gradient based technique and laplacian based technique. In the first section of the paper describe the introduction and the second section is describe of the paper is gradient operator and the third section is describe the laplacian operator. The gradient based techniques are as Robert Cross operator, sobel operator, prewitt operator....

Topics: Edge Detection, Gradient Operator, Laplacian Operator

Folkscanomy Miscellaneous

564
564

Dec 28, 2015
12/15

by
Rabinovich, Vladimir; Silbermann, Bernd; Roch, Steffen

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Limit Operators and Their Applications in Operator Theory Author: Vladimir Rabinovich, Bernd Silbermann, Steffen Roc Published by Birkhäuser Basel ISBN: 978-3-0348-9619-1 DOI: 10.1007/978-3-0348-7911-8 Table of Contents: Limit Operators Fredholmness of Band-dominated Operators Convolution Type Operators on ℝ Pseudodifferential Operators Pseudodifference Operators Finite Sections of Band-dominated Operators Axiomatization of the Limit Operators Approach

Topics: Mathematics, Operator theory, Mathematics, Operator theory

Edge Detection is one of the important and most frequently used approaches for Image Segmentation in Digital Image processing. Selection of particular algorithm for detecting edges of images in presence of noise is always a challenging task. This paper mainly focuses on brief Study of different edge detection algorithms for images in presence of noise. In this paper we have studied Prewitt, Sobel, Robert, and Canny edge detection algorithms to find the better method in image edge detection...

Topics: Edge Detection, Sobel Operator, Prewitt Operator, Robert Operator & Canny Edge Detector

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4.0

Oct 12, 2021
10/21

by
NSF/CBMS Regional Conference on Coordinates in Operator Algebras: Groupoids and Categories, Their Representations and Applications (1990 : Texas Christian University)

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xxi, 215 p. : 26 cm

Topics: Operator algebras -- Congresses, Operator theory -- Congresses

15
15

Sep 14, 2019
09/19

by
Kadison, Richard V., 1925-

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v. ; 24 cm

Topic: Operator algebras

144
144

Dec 9, 2011
12/11

by
Gohberg, I. (Israel), 1928-; Goldberg, Seymour, 1928- joint author

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Bibliography: p. 280-281

Topic: Operator theory

From the bitsavers.org collection, a scanned-in computer-related document. mit :: ai :: aim :: AIM-142

Topics: operator, symbol, binary, string, operand, search, current, level, unary, character, binary...

7
7.0

Jan 1, 2021
01/21

by
Spread the Sign

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eye 7

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ASL vocabulary

Topic: machinery operator

54
54

Aug 2, 2019
08/19

by
Kadison, Richard V., 1925-

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v. ; 24 cm

Topic: Operator algebras

3
3.0

May 22, 2022
05/22

by
Arveson, William

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viii, 93 p. : 25 cm

Topic: Operator algebras

14
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v. ; 25 cm. --

Topic: Operator theory

http://uf.catalog.fcla.edu/uf.jsp?st=UF021609369%26ix=pm%26I=0%26V=D%26pm=1

Topic: Hamiltonian operator.

Based on the Einstein operator, the operational rules of interval neutrosophic numbers are defined, according to the combination of Einstein operations and generalized aggregation operators, the interval neutrosophic generalized weighted Einstein average (INGWEA) operator, interval neutrosophic generalized ordered weighted Einstein average (INGOWEA) operator and interval neutrosophic generalized hybrid weighted Einstein average (INGHWEA) operator are proposed .

Topics: interval neutrosophic number, Einstein operator, generalized averaging operator

1,205
1.2K

Jul 31, 2012
07/12

by
Patrick Bruskiewich

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In undergraduate quantum mechanics parity is introduced with the creation and annihilation operators (the Fock representation) for the one dimensional quantum harmonic oscillator. In this paper a pedagogical approach is taken to derive the parity operator in terms of this operator formalism.

Topics: Parity Operator, Quantum Harmonic Oscillator. creation operator, annihilation operator, Fock...

10
10.0

Oct 21, 2020
10/20

by
Jörgens, Konrad, 1926-1974

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140 pages 26 cm

Topics: Hamiltonian operator, Spectral theory (Mathematics), Opérateur hamiltonien, Spectre...

10
10.0

Jun 30, 2018
06/18

by
Marcelo Laca; Nadia S. Larsen; Sergey Neshveyev; Aidan Sims; Samuel B. G. Webster

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We investigate the factor types of the extremal KMS states for the preferred dynamics on the Toeplitz algebra and the Cuntz--Krieger algebra of a strongly connected finite $k$-graph. For inverse temperatures above 1, all of the extremal KMS states are of type I$_\infty$. At inverse temperature 1, there is a dichotomy: if the $k$-graph is a simple $k$-dimensional cycle, we obtain a finite type I factor; otherwise we obtain a type III factor, whose Connes invariant we compute in terms of the...

Topics: Mathematics, Operator Algebras

Source: http://arxiv.org/abs/1409.6481

6
6.0

Jun 30, 2018
06/18

by
Qihui Li; Don Hadwin; Jiankui Li; Xiujuan Ma; Junhao Shen

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In the paper, we consider the question whether a unital full amalgamated free product of quasidiagonal C*-algebras is quasidiagonal again. We give a sufficient condition such that a unital full amalgamated free product of quasidiagonal C*-algebras with amalgamation over a finite dimensional C*- algebra is quasidiagonal. Applying this result, we conclude that a unital full free product of two AF algebras with amalgamation over a finite-dimensional C*-algebra is AF if there are faithful tracial...

Topics: Mathematics, Operator Algebras

Source: http://arxiv.org/abs/1412.0120

112
112

Jun 26, 2018
06/18

by
Bruce Blackadar

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We examine splitting of the quotient map from the full free product $A*B$, or the unital free product $A*_{\mathbb C}B$, to the (maximal) tensor product $A\otimes B$, for unital C*-algebras $A$ and $B$. Such a splitting is very rare, but we show there is one if $A$ and $B$ are both the Cuntz algebra $O_2$ or $O_\infty$, and in a few other cases. The splitting is not explicit (and in principle probably cannot be). We also describe severe $K$-theoretic obstructions to a splitting.

Topics: Mathematics, Operator Algebras

Source: http://arxiv.org/abs/1501.03183

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21

Jun 26, 2018
06/18

by
Suliman Albandik; Ralf Meyer

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We interpret several constructions with C*-algebras as colimits in the bicategory of correspondences. This includes crossed products for actions of groups and crossed modules, Cuntz-Pimsner algebras of proper product systems, direct sums and inductive limits, and certain amalgamated free products.

Topics: Mathematics, Operator Algebras

Source: http://arxiv.org/abs/1502.07771

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23

Jun 27, 2018
06/18

by
George A. Elliott; Guihua Gong; Huaxin Lin; Zhuang Niu

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Let $A$ be a simple separable unital locally approximately subhomogeneous C*-algebra (locally ASH algebra). It is shown that $A\otimes Q$ can be tracially approximated by unital Elliott-Thomsen algebras with trivial $\textrm{K}_1$-group, where $Q$ is the universal UHF algebra. In particular, it follows that $A$ is classifiable by the Elliott invariant if $A$ is Jiang-Su stable.

Topics: Operator Algebras, Mathematics

Source: http://arxiv.org/abs/1506.02308

9
9.0

Jun 29, 2018
06/18

by
Terry A. Loring; Fredy Vides

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We present solutions to local connectivity problems in matrix representations of the form $C([-1,1]^{N}) \to A_{n,\varepsilon} \leftarrow C_{\varepsilon}(\mathbb{T}^{2})$ for any $\varepsilon\in[0,2]$ and any integer $n\geq 1$, where $A_{n,\varepsilon}\subseteq M_n$ and where $C_{\varepsilon}(\mathbb{T}^{2})$ denotes the {\bf Soft Torus}. We solve the connectivity problems by introducing the so called toroidal matrix links, which can be interpreted as normal contractive matrix analogies of free...

Topics: Operator Algebras, Mathematics

Source: http://arxiv.org/abs/1605.06590

5
5.0

Jun 29, 2018
06/18

by
Mohammad B. Asadi; Zahra Hassanpour-Yakhdani

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We show that if $A=K(l^2)+ \mathbb{C}I_{l^2}$, then there exists a Hilbert $A$-module that possess no frames.

Topics: Operator Algebras, Mathematics

Source: http://arxiv.org/abs/1608.02746

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12

Jun 30, 2018
06/18

by
Adam Rennie; David Robertson; Aidan Sims

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We show that if $G$ is a second countable locally compact Hausdorff \'etale groupoid carrying a suitable cocycle $c:G\to\mathbb{Z}$, then the reduced $C^*$-algebra of $G$ can be realised naturally as the Cuntz-Pimsner algebra of a correspondence over the reduced $C^*$-algebra of the kernel $G_0$ of $c$. If the full and reduced $C^*$-algebras of $G_0$ coincide, we deduce that the full and reduced $C^*$-algebras of $G$ coincide. We obtain a six-term exact sequence describing the $K$-theory of...

Topics: Mathematics, Operator Algebras

Source: http://arxiv.org/abs/1402.7126

5
5.0

Jun 30, 2018
06/18

by
Alain Connes; Fedor Sukochev; Dmitriy Zanin

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We complete the proof of the Trace Theorem in the quantized calculus for quasi-Fuchsian group which was stated and sketched, but not fully proved, on pp. 322-325 in the book "Noncommutative Geometry" of the first author.

Topics: Operator Algebras, Mathematics

Source: http://arxiv.org/abs/1703.05447

Magazine Contribution Inbox

161
161

Jul 26, 2015
07/15

by
Felt & Tarrant Manufacturing Co., Chicago, U.S.A.

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Comptometer News , Vol. I, Issue 1, Dec 1926 Published now and then for Comptometer Operators throughout the World Frank T. Hess, Editor

Topics: Comptometer, calculator, operator

4
4.0

Jun 30, 2018
06/18

by
Benjamin Willson

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For a locally compact quantum group $\mathbb{G}$, the quantum group algebra $L^1(\mathbb{G})$ is operator amenable if and only if it has an operator bounded approximate diagonal. It is known that if $L^1(\mathbb{G})$ is operator biflat and has a bounded approximate identity then it is operator amenable. In this paper, we consider nets in $L^2(\mathbb{G})$ which suffice to show these two conditions and combine them to make an approximate diagonal of the form $\omega_{{W'}^*\xi\otimes\eta}$ where...

Topics: Mathematics, Operator Algebras

Source: http://arxiv.org/abs/1410.1968

3
3.0

Jun 30, 2018
06/18

by
Petr Ivankov

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A classical Wilson line is a cooresponedce between closed paths and elemets of a gauge group. However the noncommutative geometry does not have closed paths. But noncommutative geometry have good generalizations of both: the covering projection, and the group of covering transformations. These notions are used for a construction of noncommutative Wilson lines. Wilson lines can also be constructed as global pure gauge fields on the universal covering space. The noncommutative analog of this...

Topics: Mathematics, Operator Algebras

Source: http://arxiv.org/abs/1408.4101

5
5.0

Jun 30, 2018
06/18

by
Masoud Salehi Sarvestani; Massoud Amini

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We describe the C*-algebra generated by an irreducible Toeplitz operator $T_{\psi}$, with continuous symbol $\psi $ on the unit circle $\mathbb{T}$, and finitely many composition operators on the Hardy space $H^2$ induced by certain linear-fractional self-maps of the unit disc, modulo the ideal of compact operators $K(H^2)$. For composition operators with automorphism symbols, we show that this algebra is not isomorphic to the one generated by the shift and composition operators.

Topics: Mathematics, Operator Algebras

Source: http://arxiv.org/abs/1408.1057

5
5.0

Jun 30, 2018
06/18

by
Eusebio Gardella; Martino Lupini

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For $p\in (1,\infty)$, we study representations of \'{e}tale groupoids on $L^{p}$-spaces. Our main result is a generalization of Renault's disintegration theorem for representations of \'{e}tale groupoids on Hilbert spaces. We establish a correspondence between $L^{p}$-representations of an \'{e}tale groupoid $G$, contractive $L^{p}$-representations of $C_{c}(G)$, and tight regular $L^{p}$-representations of any countable inverse semigroup of open slices of $G$ that is a basis for the topology...

Topics: Mathematics, Operator Algebras

Source: http://arxiv.org/abs/1408.3752

4
4.0

Jun 30, 2018
06/18

by
S. Curran; Y. Dabrowski; D. Shlyakhtenko

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We study 2-cabled analogs of Voiculescu's trace and free Gibbs states on Jones planar algebras. These states are traces on a tower of graded algebras associated to a Jones planar algebra. Among our results is that, with a suitable definition, finiteness of free Fisher information for planar algebra traces implies that the associated tower of von Neumann algebras consists of factors, and that the standard invariant of the associated inclusion is exactly the original planar algebra. We also give...

Topics: Mathematics, Operator Algebras

Source: http://arxiv.org/abs/1411.0268

6
6.0

Jun 30, 2018
06/18

by
Panchugopal Bikram; Kunal Mukherjee

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It is proved that the $q$-Araki-Woods von Neumann algebras $\Gamma_q(\CH_\R,U_t)^{\prime\prime}$ for $q\in (-1,1)$ are factors if $dim(\CH_\R)\geq 3$.

Topics: Operator Algebras, Mathematics

Source: http://arxiv.org/abs/1703.04924

3
3.0

Jun 30, 2018
06/18

by
Zlatko Lazović

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We provided an analogue Banach-Alaoglu theorem for Hilbert $H^*$-module. We construct a $\Lambda$-weak$^*$ topology on a Hilbert $H^*$-module over a proper $H^*$-algebra $\Lambda$, such that the unit ball is compact with respect to $\Lambda$-weak$^*$ topology.

Topics: Operator Algebras, Mathematics

Source: http://arxiv.org/abs/1703.06732

4
4.0

Jun 30, 2018
06/18

by
Kengo Matsumoto

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We will introduce a notion of strongly continuous orbit equivalence in one-sided topological Markov shifts. Strongly continuous orbit equivalence yields a topological conjugacy between their two-sided topological Markov shifts $(\bar{X}_A, \bar{\sigma}_A)$ and $(\bar{X}_B, \bar{\sigma}_B)$. We prove that one-sided topological Markov shifts $(X_A, \sigma_A)$ and $(X_B, \sigma_B)$ are strongly continuous orbit equivalent if and only if there exists an isomorphism bewteen the Cuntz-Krieger...

Topics: Mathematics, Operator Algebras

Source: http://arxiv.org/abs/1408.4501

5
5.0

Jun 30, 2018
06/18

by
Slawomir Klimek; Matt McBride; Sumedha Rathnayake; Kaoru Sakai

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We compute the spectrum of the operator of multiplication by the complex coordinate in a Hilbert space of holomorphic functions on a disk with two circular holes. Additionally we determine the structure of the $C^*$-algebra generated by that operator. The algebra can be considered as the quantum pair of pants.

Topics: Mathematics, Operator Algebras

Source: http://arxiv.org/abs/1410.0733

5
5.0

Jun 30, 2018
06/18

by
Leonid Helmer

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Let $H^{\infty}(E)$ be a non commutative Hardy algebra, associated with a $W^*$-correspondence $E$. These algebras were introduced in 2004, ~\cite{MuS3}, by P. Muhly and B. Solel, and generalize the classical Hardy algebra of the unit disc $H^{\infty}(\mathbb{D})$. As a special case one obtains also the algebra $\mathcal{F}^{\infty}$ of Popescu, which is $H^{\infty}(\mathbb{C}^n)$ in our setting. In this paper we view the algebra $H^\infty(E)$ as acting on a Hilbert space via an induced...

Topics: Mathematics, Operator Algebras

Source: http://arxiv.org/abs/1410.1788

7
7.0

Jun 30, 2018
06/18

by
Soumyashant Nayak

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A generalization of classical determinant inequalities like Hadamard's inequality and Fischer's inequality is studied. For a version of the inequalities originally proved by Arveson for positive operators in von Neumann algebras with a tracial state, we give a different proof. We also improve and generalize to the setting of finite von Neumann algebras, some `Fischer-type' inequalities by Matic for determinants of perturbed positive-definite matrices. In the process, a conceptual framework is...

Topics: Operator Algebras, Mathematics

Source: http://arxiv.org/abs/1704.05421

6
6.0

Jun 30, 2018
06/18

by
Maria Joiţa; Ioannis Zarakas

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We associate a pro-C*-algebra to a pro-C*-correspondence and show that this construction generalizes the construction of crossed products by Hilbert pro-C*-bimodules and the construction of pro-C*-crossed products by strong bounded automorphisms.

Topics: Mathematics, Operator Algebras

Source: http://arxiv.org/abs/1410.8735

6
6.0

Jun 30, 2018
06/18

by
G. K. Eleftherakis

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We define a relation < for dual operator algebras. We say that B < A if there exists a projection p in A such that B and pAp are Morita equivalent in our sense. We show that < is transitive, and we investigate the following question: If A < B and B < A, then is it true that A and B are stably isomorphic? We propose an analogous relation < for dual operator spaces, and we present some properties of < in this case.

Topics: Operator Algebras, Mathematics

Source: http://arxiv.org/abs/1704.04403

9
9.0

Jun 30, 2018
06/18

by
G. K. Eleftherakis

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Recently a new equivalence relation between weak* closed operator spaces acting on Hilbert spaces has appeared. Two weak* closed operator spaces U, V are called weak TRO equivalent if there exist ternary rings of operators M_i, i=1,2 such that U=[ M_2 V M_1^*]^{-w^*}, V=[ M_2^* U M_1]^{-w^*} . Weak TRO equivalent spaces are stably isomorphic, and conversely, stably isomorphic dual operator spaces have normal completely isometric representations with weak TRO equivalent images. In this paper, we...

Topics: Mathematics, Operator Algebras

Source: http://arxiv.org/abs/1401.3139

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24

Jun 26, 2018
06/18

by
Suliman Albandik; Ralf Meyer

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We interpret the Cuntz-Pimsner covariance condition as a nondegeneracy condition for representations of product systems. We show that Cuntz-Pimsner algebras over Ore monoids are constructed through inductive limits and section algebras of Fell bundles over groups. We construct a groupoid model for the Cuntz-Pimsner algebra coming from an action of an Ore monoid on a space by topological correspondences. We characterise when this groupoid is effective or locally contracting and describe its...

Topics: Mathematics, Operator Algebras

Source: http://arxiv.org/abs/1502.07768

4
4.0

Jun 30, 2018
06/18

by
Ping Wong Ng; Leonel Robert

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In a simple C*-algebra with suitable regularity properties, any unitary or invertible element with de la Harpe--Skandalis determinant zero is a finite product of commutators.

Topics: Mathematics, Operator Algebras

Source: http://arxiv.org/abs/1408.4359

5
5.0

Jun 30, 2018
06/18

by
David McConnell

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We study tensor products of a $C_0 (X)$-algebra $A$ and a $C_0 (Y)$-algebra $B$, and analyse the structure of their minimal tensor product $A \otimes B$ as a $C_0 (X \times Y)$-algebra. We show that when $A$ and $B$ define continuous C$^{\ast}$-bundles, that continuity of the bundle arising from the $C_0 (X \times Y)$-algebra $A \otimes B$ is a strictly weaker property than continuity of the `fibrewise tensor products' studied by Kirchberg and Wassermann. For a fixed quasi-standard...

Topics: Mathematics, Operator Algebras

Source: http://arxiv.org/abs/1402.3711

4
4.0

Jun 29, 2018
06/18

by
Ilja Gogić; Richard M. Timoney

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For a C*-algebra A we consider the problem of when the set $TM_0(A)$ of all two-sided multiplications $x \mapsto axb$ ($a,b \in A$) on A is norm closed, as a subset of B(A). We first show that $TM_0(A)$ is norm closed for all prime C*-algebras A. On the other hand, if $A\cong \Gamma_0(E )$ is an n-homogeneous C*-algebra, where E is the canonical $\mathbb{M}_n $-bundle over the primitive spectrum X of A, we show that $TM_0(A)$ fails to be norm closed if and only if there exists a...

Topics: Operator Algebras, Mathematics

Source: http://arxiv.org/abs/1601.06848

5
5.0

Jun 29, 2018
06/18

by
Kenley Jung

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Using an analogy with the rank theorem in differential geometry, it is shown that for a finite $n$-tuple $X$ in a tracial von Neumann algebra and any finite $m$-tuple $F$ of $*$-polynomials in $n$ noncommuting indeterminates, \begin{eqnarray*} \delta_0(X) & \leq & \text{Nullity}(D^sF(X)) + \delta_0(F(X):X) \end{eqnarray*} where $\delta_0$ is the (modified) microstates free entropy dimension and $D^sF(X)$ is a kind of derivative of $F$ evaluated at $X$. When $F(X) =0$ and $|D^sF(X)|$ has...

Topics: Operator Algebras, Mathematics

Source: http://arxiv.org/abs/1602.04726

9
9.0

Jun 29, 2018
06/18

by
Geoffrey L. Price

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We show that every binary shift on the hyperfinite $II_1$ factor $R$ is cocycle conjugate to at least countably many non-conjugate binary shifts. This holds in particular for binary shifts of infinite commutant index.

Topics: Operator Algebras, Mathematics

Source: http://arxiv.org/abs/1602.05647

8
8.0

Jun 29, 2018
06/18

by
Xiao Xiong

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We extend some classical results of Cowling and Meda to the noncommutative setting. Let $(T_t)_{t>0}$ be a symmetric contraction semigroup on a noncommutative space $L_p(\mathcal{M}),$ and let the functions $\phi$ and $\psi$ be regularly related. We prove that the semigroup $(T_t)_{t>0}$ is $\phi$-ultracontractive, i.e. $\|T_t x\|_\infty \leq C \phi(t)^{-1} \|x\|_1$ for all $x\in L_1(\mathcal{M})$ and $ t>0$ if and only if its infinitesimal generator $L$ has the Sobolev embedding...

Topics: Operator Algebras, Mathematics

Source: http://arxiv.org/abs/1603.04247