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C*-algebras where every element is a limit of products of positive elements

Published online by Cambridge University Press:  11 August 2021

Leonel Robert*
Affiliation:
Department of Mathematics, University of Louisiana at Lafayette, Lafayette, LA70506, USA

Abstract

We obtain a characterization of the unital C*-algebras with the property that every element is a limit of products of positive elements, thereby answering a question of Murphy and Phillips.

Type
Article
Copyright
© Canadian Mathematical Society 2021

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References

de la Harpe, P. and Skandalis, G., Déterminant associé à une trace sur une algébre de Banach . Ann. Inst. Fourier (Grenoble). 34(1984), 241260.CrossRefGoogle Scholar
Gong, G., Lin, H., and Xue, Y., Determinant rank of C*-algebras . Pacific J. Math. 274(2015), 405436.CrossRefGoogle Scholar
Murphy, G. J. and Phillips, N. C., C*-algebras with the approximate positive factorization property . Trans. Amer. Math. Soc. 348(1996), 22912306.10.1090/S0002-9947-96-01657-1CrossRefGoogle Scholar
Quinn, T., Factorization in C*-algebras: products of positive operators. Ph.D. thesis, Dalhousie University, Halifax, and ProQuest LLC, Ann Arbor, MI, 1992.Google Scholar
Rieffel, M. A., Dimension and stable rank in the K-theory of C*-algebras . Proc. Lond. Math. Soc. (3). 46(1983), 301333.10.1112/plms/s3-46.2.301CrossRefGoogle Scholar
Rieffel, M. A., The homotopy groups of the unitary groups of noncommutative tori . J. Operator Theory. 17(1987), 237254.Google Scholar
Robert, L., Normal subgroups of invertibles and of unitaries in a C*-algebra . J. Reine Angew. Math. 756(2019), 285319.10.1515/crelle-2017-0020CrossRefGoogle Scholar
Thomsen, K., Traces, unitary characters and crossed products by Z . Publ. Res. Inst. Math. Sci. 31(1995), 10111029.10.2977/prims/1195163594CrossRefGoogle Scholar