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Representations of Quantized Differential Forms in Non-Commutative Geometry

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Mathematical Physics X

Abstract

Besides giving a survey of some basic structures and ideas in K-theory and cyclic cohomology for non-commutative algebras, we describe a new way to realize algebras of abstract differential forms, over a given algebra A, and their “quantum” deformations. For this we use subalgebras and quotients of an algebra A[D, F] obtained from A by adjoining two additional elements D, F. This is closely related to the notion of a Fredholm module.

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References

  1. Bellissard, J.: K-theory of C*-algebras in solid state physics, statistical mechanics and field theory, mathematical aspects. Lecture Notes in Phys. 257, 99–156 (1986)

    Article  MathSciNet  ADS  Google Scholar 

  2. Bellissard, J.: Ordinary quantum Hall effect and noncommutative cohomol-ogy. Proc. of the Bad Schandau Conf. on Localization, Teubner, Leipzig (1987)

    Google Scholar 

  3. Blackadar, B.: K-theory for Operator Algebras. Springer-Verlag, Heidelberg/Berlin/New York/Tokyo, 1986

    Book  MATH  Google Scholar 

  4. Blackadar, B., Cuntz, J.: Differential Banach algebra norms and smooth subalgebras of C*-algebras. Preprint

    Google Scholar 

  5. Blackadar, B., Kumjian, A., Rørdam, M.: Approximately central matrix units and the structure of non-commutative tori. Preprint

    Google Scholar 

  6. Bratteli, O., Kishimoto, A.: Non-commutative spheres III: Irrational rotations. Preprint

    Google Scholar 

  7. Connes, A.: Non-commutative differential geometry. Publ. Math. IHES 62, 257–360 (1985)

    Article  MathSciNet  Google Scholar 

  8. Connes, A.: Entire cyclic cohomology of Banach algebras and characters of θ-summable Fredholm modules, K-theory 1, 519–548 (1988)

    Article  MathSciNet  MATH  Google Scholar 

  9. Connes, A., Cuntz, J.: Quasi-homomorphismes, cohomologie cyclique et positivité. Comm.Math.Phys. 114, 515–526 (1988)

    Article  MathSciNet  MATH  ADS  Google Scholar 

  10. Cuntz, J.: Simple C*-algebras generated by isometries. Comm.Math.Phys. 57, 173–185 (1977)

    Article  MathSciNet  MATH  ADS  Google Scholar 

  11. Cuntz, J.: A new look at KK-theory. K-theory 1, 31–51 (1988)

    Article  MathSciNet  Google Scholar 

  12. Cuntz, J.: Cyclic cohomology and K-homology. Proc.Int.Congr.Math. Kyoto 1990, to appear

    Google Scholar 

  13. Cuntz, J., Quillen, D.: Cyclic homology and nonsingularity for noncommutative algebras. In preparation.

    Google Scholar 

  14. Doplicher, S., Roberts, J.: A new duality theory for compact groups. Invent.Math. 98, 157–218 (1989)

    Article  MathSciNet  MATH  ADS  Google Scholar 

  15. Doplicher, S., Roberts, J.: Why there is a field algebra with a compact gauge group describing the superselection structure in particle physics. Comm.Math.Phys. 131, 57–107 (1990)

    Article  MathSciNet  ADS  Google Scholar 

  16. Fedosov, B.V.: Analytic formulas for the index of elliptic operators (translation from Russian). Trans.Moscow Math.Soc. 30, 159–240 (1974)

    MathSciNet  MATH  Google Scholar 

  17. Jaffe, A., Lesniewski, A., Osterwalder, K.: Quantum K-theory: the Chern character. Comm.Math.Phys. 118, 1–14 (1988)

    Article  MathSciNet  MATH  ADS  Google Scholar 

  18. Kasparov, G.G.: The operator K-functor and extensions of C*-algebras. Izv.Akad.Nauk SSSR, Ser.Math. 44, 571–636 (1980)

    MathSciNet  MATH  Google Scholar 

  19. Kasparov, G.G.: Equivariant KK-theory and the Novikov conjecture. Invent.Math. 91, 147–201 (1988)

    Article  MathSciNet  MATH  ADS  Google Scholar 

  20. Kastler, D.: Cyclic cohomology. Hermann, Paris, 1988

    MATH  Google Scholar 

  21. Woronowicz, S.L.: Compact matrix pseudogroups. Comm.Math.Phys. 111, 613–665 (1987)

    Article  MathSciNet  MATH  ADS  Google Scholar 

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© 1992 Springer-Verlag Berlin Heidelberg

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Cuntz, J. (1992). Representations of Quantized Differential Forms in Non-Commutative Geometry. In: Schmüdgen, K. (eds) Mathematical Physics X. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-77303-7_17

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  • DOI: https://doi.org/10.1007/978-3-642-77303-7_17

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-642-77305-1

  • Online ISBN: 978-3-642-77303-7

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