The garden of quantum spheres
Ludwik Dąbrowski (2003)
Banach Center Publications
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A list of known quantum spheres of dimension one, two and three is presented.
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Ludwik Dąbrowski (2003)
Banach Center Publications
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A list of known quantum spheres of dimension one, two and three is presented.
Lagraa, M. (2002)
Journal of Applied Mathematics
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Omori, H. (1999)
Lobachevskii Journal of Mathematics
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Ismael Cohen, Elmar Wagner (2012)
Banach Center Publications
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S. L. Woronowicz's theory of C*-algebras generated by unbounded elements is applied to q-normal operators satisfying the defining relation of the quantum complex plane. The unique non-degenerate C*-algebra of bounded operators generated by a q-normal operator is computed and an abstract description is given by using crossed product algebras. If the spectrum of the modulus of the q-normal operator is the positive half line, this C*-algebra will be considered as the algebra of continuous...
R. Budzyński, W. Kondracki (1995)
Banach Center Publications
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Mićo Đurđević (1997)
Banach Center Publications
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A construction of the noncommutative-geometric counterparts of classical classifying spaces is presented, for general compact matrix quantum structure groups. A quantum analogue of the classical concept of the classifying map is introduced and analyzed. Interrelations with the abstract algebraic theory of quantum characteristic classes are discussed. Various non-equivalent approaches to defining universal characteristic classes are outlined.
Tomasz Brzeziński (1997)
Banach Center Publications
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An approach to construction of a quantum group gauge theory based on the quantum group generalisation of fibre bundles is reviewed.
Piotr Mikołaj Sołtan (2010)
Banach Center Publications
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We give a survey of techniques from quantum group theory which can be used to show that some quantum spaces (objects of the category dual to the category of C*-algebras) do not admit any quantum group structure. We also provide a number of examples which include some very well known quantum spaces. Our tools include several purely quantum group theoretical results as well as study of existence of characters and traces on C*-algebras describing the considered quantum spaces as well as...
Tomasz Brzeziński (1997)
Banach Center Publications
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A generalisation of quantum principal bundles in which a quantum structure group is replaced by a coalgebra is proposed.
Nina V. Volosova (2010)
Banach Center Publications
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We consider quantum analogues of locally convex spaces in terms of the non-coordinate approach. We introduce the notions of a quantum Arens-Michael algebra and a quantum polynormed module, and also quantum versions of projectivity and contractibility. We prove that a quantum Arens-Michael algebra is contractible if and only if it is completely isomorphic to a Cartesian product of full matrix C*-algebras. Similar results in the framework of traditional (non-quantum) approach are established,...
(1997)
Banach Center Publications
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Maysam Maysami Sadr (2017)
Czechoslovak Mathematical Journal
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We define algebraic families of (all) morphisms which are purely algebraic analogs of quantum families of (all) maps introduced by P. M. Sołtan. Also, algebraic families of (all) isomorphisms are introduced. By using these notions we construct two classes of Hopf-algebras which may be interpreted as the quantum group of all maps from a finite space to a quantum group, and the quantum group of all automorphisms of a finite noncommutative (NC) space. As special cases three classes of NC...
Janys̆ka, Joseph, Modugno, Marco (1997)
General Mathematics
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Ludwik Dąbrowski, Andrzej Sitarz (2003)
Banach Center Publications
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Using principles of quantum symmetries we derive the algebraic part of the real spectral triple data for the standard Podleś quantum sphere: equivariant representation, chiral grading γ, reality structure J and the Dirac operator D, which has bounded commutators with the elements of the algebra and satisfies the first order condition.
Diego de Falco, Dario Tamascelli (2011)
RAIRO - Theoretical Informatics and Applications - Informatique Théorique et Applications
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Quantum annealing, or quantum stochastic optimization, is a classical randomized algorithm which provides good heuristics for the solution of hard optimization problems. The algorithm, suggested by the behaviour of quantum systems, is an example of proficuous cross contamination between classical and quantum computer science. In this survey paper we illustrate how hard combinatorial problems are tackled by quantum computation and present some examples of the heuristics provided by quantum...