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2005 | 3 | 4 | 718-765
Tytuł artykułu

Covariance algebra of a partial dynamical system

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EN
Abstrakty
EN
A pair (X, α) is a partial dynamical system if X is a compact topological space and α: Δ→ X is a continuous mapping such that Δ is open. Additionally we assume here that Δ is closed and α(Δ) is open. Such systems arise naturally while dealing with commutative C *-dynamical systems. In this paper we construct and investigate a universal C *-algebra C *(X,α) which agrees with the partial crossed product [10] in the case α is injective, and with the crossed product by a monomorphism [22] in the case α is onto. The main method here is to use the description of maximal ideal space of a coefficient algebra, cf. [16, 18], in order to construct a larger system, $$(\tilde X,\tilde \alpha )$$ where $$\tilde \alpha $$ is a partial homeomorphism. Hence one may apply in extenso the partial crossed product theory [10, 13], In particular, one generalizes the notions of topological freeness and invariance of a set, which are being use afterwards to obtain the Isomorphism Theorem and the complete description of ideals of C *(X, α).
Wydawca
Czasopismo
Rocznik
Tom
3
Numer
4
Strony
718-765
Opis fizyczny
Daty
wydano
2005-12-01
online
2005-12-01
Twórcy
Bibliografia
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  • [4] B. Blackadar: K-theory for Operator algebras, Springer-Verlag, New York, 1986.
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  • [10] R. Exel: “Circle actions on C *-algebras, partial automorphisms and generalized Pimsner-Voiculescu exact sequence”, J. Funct. analysis, Vol. 122, (1994), pp. 361–401. http://dx.doi.org/10.1006/jfan.1994.1073
  • [11] R. Exel and M. Laca: “Cuntz-Krieger algebras for infinite matrices”, J. Reine Angew. Math., Vol. 512, (1999), pp. 119–172. http://front.math.ucdavis.edu/funct-an/9712008
  • [12] R. Exel: “A new look at the crossed-product of a C *-algebra by an endomorphism”, Ergodic Theory Dynam. Systems, Vol. 23, (2003), pp. 1733–1750, http://front.math.ucdavis.edu/math.OA/0012084 http://dx.doi.org/10.1017/S0143385702001797
  • [13] R. Exel, M. Laca and J. Quigg: “Partial dynamical systems and C *-algebras generated by partial isometries”, J. Operator Theory, Vol. 47, (2002), pp. 169–186. http://front.math.ucdavis.edu/funct-an/9712007.
  • [14] R. Exel and D. Royer: “The crossed product by a partial endomorphism” Munuscript at arXiv:math.OA/0410192 vl 6 Oct 2004, http://front.math.ucdavis.edu/math.OA/0410192.
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  • [16] B.K. Kwaśniewski and A.V. Lebedev: “Maximal ideal space of a commutative coefficient algebra”, preprint, http://front.math.ucdavis.edu/math.OA/0311416.
  • [17] M. Laca and I. Raeburn: “A semigroup crossed product arising in number theory”, J. London Math. Soc., Vol. 59, (1999), pp. 330–344. http://dx.doi.org/10.1112/S0024610798006620
  • [18] A.V. Lebedev and A. Odzijewicz: “Extensions of C *-algebras by partial isometries”, Matem. Sbornik, Vol. 195(7), (2004), pp. 37–70. http://front.math.ucdavis.edu/math.OA/0209049
  • [19] A.V. Lebedev: “Topologically free partial actions and faithful representations of partial crossed products”, preprint, http://front.math.ucdavis.edu/math.OA/0305105.
  • [20] K. McClanachan: “K-theory for partial crossed products by discrete groups”, J. Funct. Analysis, Vol. 130, (1995), pp. 77–117. http://dx.doi.org/10.1006/jfan.1995.1064
  • [21] G.J. Murphy: C *-algebras and operator theory, Academic Press, 1990.
  • [22] G.J. Murphy: “Crossed products of C *-algebras by endomorphisms”, Integral Equations Oper. Theory, Vol. 24, (1996), pp. 298–319. http://dx.doi.org/10.1007/BF01204603
  • [23] D.P. O’Donovan: “Weighted shifts and covariance algebras”, Trans. Amer. Math. Soc., Vol. 208, (1975), pp. 1–25. http://dx.doi.org/10.2307/1997272
  • [24] W.L. Paschke: “The Crossed Product of a C *-algebra by an Endomorphism”, Proc. Amer. math. Soc., Vol. 80, (1980), pp. 113–118. http://dx.doi.org/10.2307/2042155
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  • [26] P.J. Stacey: “Crossed products of C *-algebras by *-endomorphisms”, J. Austral. Math. Soc., Vol. 54, (1993), pp. 204–212. http://dx.doi.org/10.1017/S1446788700037113
  • [27] R.F. Williams: “Expanding attractors”, IHES Publ. Math., Vol. 54, (1973), pp. 204–212.
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Bibliografia
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