Abstract
The focus of the final chapter of the book is on applications of the ideas and results developed in earlier chapters to Functional Analysis and Ring Theory. The chapter begins with the development of necessary and sufficient conditions on a ring so that its maximal right ring of quotients can be decomposed into a direct products of indecomposable rings or into a direct products of prime rings. This relies on results on the idempotent closure class of rings discussed in Chap. 8 and a dimension on bimodules introduced in this chapter. As an application, a quasi-Baer ring hull of a semiprime ring with only finitely many minimal prime ideals is shown to be a finite direct sum of prime rings. Conditions for a ∗-ring to become a Baer ∗-ring or a quasi-Baer ∗-ring are discussed. The quasi-Baer ∗-ring property is shown to transfer from a ring to its various polynomial extensions. Self-adjoint ideals in Baer ∗-rings and quasi-Baer ∗-rings are examined. In applications to the study of C ∗-algebras, it is shown that a unital C ∗-algebras A is boundedly centrally closed if and only if A is a quasi-Baer ring. The local multiplier algebra of a C ∗-algebras is shown to be always quasi-Baer. Characterizations of C ∗-algebras whose local multiplier algebras are C ∗-direct products of prime C ∗-algebras are provided. The quasi-Baer property is discussed for a C ∗-algebras A with a finite group G of ∗-automorphisms in terms of the skew group ring A ∗ G and the fixed ring. Finally, C ∗-algebras satisfying a polynomial identity with only finitely many minimal prime ideals are characterized.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Similar content being viewed by others
References
Amitsur, S.A.: On rings of quotients. Symp. Math. 8, 149–164 (1972)
Andrunakievic, V.A., Rjabuhin, Ju.M.: Rings without nilpotent elements and completely simple ideals. Sov. Math. Dokl. 9, 565–568 (1968)
Ara, P.: Centers of maximal quotient rings. Arch. Math. 50, 342–347 (1988)
Ara, P.: The extended centroid of C ∗-algebras. Arch. Math. 54, 358–364 (1990)
Ara, P.: On the symmetric algebra of quotients of a C ∗-algebra. Glasg. Math. J. 32, 377–379 (1990)
Ara, P., Mathieu, M.: A local version of the Dauns-Hofmann theorem. Math. Z. 208, 349–353 (1991)
Ara, P., Mathieu, M.: An application of local multipliers to centralizing mappings of C ∗-algebras. Q. J. Math. Oxf. 44, 129–138 (1993)
Ara, P., Mathieu, M.: On the central Haagerup tensor product. Proc. Edinb. Math. Soc. 37, 161–174 (1993)
Ara, P., Mathieu, M.: Local Multipliers of C ∗-Algebras. Springer Monographs in Math. Springer, London (2003)
Armendariz, E.P., Birkenmeier, G.F., Park, J.K.: Ideal intrinsic extensions with connections to PI-rings. J. Pure Appl. Algebra 213, 1756–1776 (2009). Corrigendum 215, 99–100 (2011)
Beidar, K.I.: Rings with generalized identities I, II. Mosc. Univ. Math. Bull. 32, 15–20; 27–33 (1977)
Berberian, S.K.: Baer ∗-Rings. Springer, Berlin (1972)
Birkenmeier, G.F., Park, J.K.: Self-adjoint ideals in Baer ∗-rings. Commun. Algebra 28, 4259–4268 (2000)
Birkenmeier, G.F., Kim, J.Y., Park, J.K.: Polynomial extensions of Baer and quasi-Baer rings. J. Pure Appl. Algebra 159, 25–42 (2001)
Birkenmeier, G.F., Park, J.K., Rizvi, S.T.: Ring hulls of semiprime homomorphic images. In: Brzeziński, T., Gómez-Pardo, J.L., Shestakov, I., Smith, P.F. (eds.) Modules and Comodules. Trends in Math., pp. 101–111. Birkhäuser, Boston (2008)
Birkenmeier, G.F., Park, J.K., Rizvi, S.T.: The structure of rings of quotients. J. Algebra 321, 2545–2566 (2009)
Birkenmeier, G.F., Park, J.K., Rizvi, S.T.: Hulls of semiprime rings with applications to C ∗-algebras. J. Algebra 322, 327–352 (2009)
Birkenmeier, G.F., Park, J.K., Rizvi, S.T.: Modules with FI-extending hulls. Glasg. Math. J. 51, 347–357 (2009)
Birkenmeier, G.F., Park, J.K., Rizvi, S.T.: Principally quasi-Baer ring hulls. In: Huynh, D.V., López-Permouth, S.R. (eds.) Advances in Ring Theory. Trends in Math., pp. 47–61. Birkhäuser, Boston (2010)
Blackadar, B.: Operator Algebras, Theory of C ∗-Algebras and von Neumann Algebras. Encyclopaedia Math. Sciences. Springer, Berlin (2006)
Busby, R.C.: Double centralizers and extensions of C ∗-algebras. Trans. Am. Math. Soc. 132, 79–99 (1968)
Davidson, K.R.: C ∗-Algebra by Example. Fields Institute Monograph, vol. 6. Amer. Math. Soc., Providence (1996)
Dixmier, J.: C ∗-Algebras. North-Holland, Amsterdam (1977)
Doran, R.S., Belfi, V.A.: Characterizations of C ∗-Algebras: The Gelfand-Naimark Theorems. Marcel Dekker, New York (1986)
Elliott, G.A.: Automorphisms determined by multipliers on ideals of a C ∗-algebra. J. Funct. Anal. 23, 1–10 (1976)
Goodearl, K.R.: Prime ideals in regular self-injective rings. Can. J. Math. 25, 829–839 (1973)
Goodearl, K.R.: Von Neumann Regular Rings. Krieger, Malabar (1991)
Goodearl, K.R., Handelman, D.E., Lawrence, J.W.: Affine Representations of Grothendieck Groups and Applications to Rickart C∗-Algebras and ℵ0-Continuous Regular Rings. Memoirs, vol. 234. Amer. Math. Soc., Providence (1980)
Jain, S.K., Lam, T.Y., Leroy, A.: On uniform dimensions of ideals in right nonsingular rings. J. Pure Appl. Algebra 133, 117–139 (1998)
Jin, H.L., Doh, J., Park, J.K.: Group actions on quasi-Baer rings. Can. Math. Bull. 52, 564–582 (2009)
Kadison, R.V., Ringrose, J.R.: Fundamentals of the Theory of Operator Algebras, Vol. I: Elementary Theory. Graduate Studies in Math., vol. 15. Amer. Math. Soc., Providence (1997)
Kaplansky, I.: Projections in Banach algebras. Ann. Math. 53, 235–249 (1951)
Kaplansky, I.: Rings of Operators. Benjamin, New York (1968)
Lam, T.Y.: Lectures on Modules and Rings. Springer, Berlin (1999)
Maeda, S., Holland, S.S. Jr.: Equivalence of projections in Baer ∗-rings. J. Algebra 39, 150–159 (1976)
Mathieu, M.: The local multiplier algebra: blending noncommutative ring theory and functional analysis. In: Brzeziński, T., Gómez-Pardo, J.L., Shestakov, I., Smith, P.F. (eds.) Modules and Comodules. Trends in Math., pp. 301–312. Birkhäuser, Boston (2008)
Montgomery, S.: Outer automorphisms of semi-prime rings. J. Lond. Math. Soc. 18, 209–220 (1978)
Palmer, T.W.: Banach Algebras and the General Theory of ∗-Algebras, Vol. I: Algebras and Banach Algebras. Cambridge Univ. Press, Cambridge (1994)
Passman, D.S.: The Algebraic Structure of Group Rings. Wiley, New York (1977)
Pedersen, G.K.: Approximating derivations on ideals of C ∗-algebras. Invent. Math. 45, 299–305 (1978)
Pedersen, G.K.: Multipliers of AW ∗-algebras. Math. Z. 187, 23–24 (1984)
Stewart, P.N.: Semi-simple radical classes. Pac. J. Math. 32, 249–255 (1970)
Tomforde, M.: Continuity of ring ∗-homomorphisms between C ∗-algebras. N.Y. J. Math. 15, 161–167 (2009)
Vas, L.: Dimension and torsion theories for a class of Baer ∗-rings. J. Algebra 289, 614–639 (2005)
Vas, L.: Class of Baer ∗-rings defined by a relaxed set of axioms. J. Algebra 297, 470–473 (2006)
Author information
Authors and Affiliations
Rights and permissions
Copyright information
© 2013 Springer Science+Business Media New York
About this chapter
Cite this chapter
Birkenmeier, G.F., Park, J.K., Rizvi, S.T. (2013). Applications to Rings of Quotients and C∗-Algebras. In: Extensions of Rings and Modules. Springer, New York, NY. https://doi.org/10.1007/978-0-387-92716-9_10
Download citation
DOI: https://doi.org/10.1007/978-0-387-92716-9_10
Publisher Name: Springer, New York, NY
Print ISBN: 978-0-387-92715-2
Online ISBN: 978-0-387-92716-9
eBook Packages: Mathematics and StatisticsMathematics and Statistics (R0)