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On Axiomatizability of Non-Commutative Lp-Spaces

  • Autores: C. Ward Henson, Yves Raynaud Árbol académico, Andrew Rizzo
  • Localización: Canadian mathematical bulletin, ISSN 0008-4395, Vol. 50, Nº 4, 2007, págs. 519-534
  • Idioma: inglés
  • DOI: 10.4153/cmb-2007-051-7
  • Texto completo no disponible (Saber más ...)
  • Resumen
    • It is shown that Schatten p-classes of operators between Hilbert spaces of different (infinite) dimensions have ultrapowers which are (completely) isometric to non-commutative Lp-spaces. On the other hand, these Schatten classes are not themselves isomorphic to non-commutative Lp spaces. As a consequence, the class of non-commutative Lp-spaces is not axiomatizable in the first-order language developed by Henson and Iovino for normed space structures, neither in the signature of Banach spaces, nor in that of operator spaces. Other examples of the same phenomenon are presented that belong to the class of corners of non-commutative Lp-spaces. For p = 1 this last class, which is the same as the class of preduals of ternary rings of operators, is itself axiomatizable in the signature of operator spaces


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