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Pták function and symmetry

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Abstract

We investigate subadditivity of Pták function as a sufficient and necessary condition for symmetry in the class of involutive spectrally bounded algebras. Among others it is proved an analogue of Raikov's criterion for complete lmc*-algebras in which the hermitian elements have finite spectral radius.

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Authors and Affiliations

  1. Dept. of Mathematics, University of Athens, 56 Themistokleous St. Egaleo, 12243, Athens, Greece

    Dimitrios G. Birbas

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  1. Dimitrios G. Birbas
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This paper is based on the author's Doctoral Thesis, University of Athens, written under the supervision of Professor M. Fragoulopoulou.

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Birbas, D.G. Pták function and symmetry. Rend. Circ. Mat. Palermo 47, 431–446 (1998). https://doi.org/10.1007/BF02851390

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  • DOI: https://doi.org/10.1007/BF02851390

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