• Medientyp: E-Artikel
  • Titel: A note on extensions of semigroups of *-endomorphisms
  • Beteiligte: Arveson, William; Kishimoto, Akitaka
  • Erschienen: American Mathematical Society (AMS), 1992
  • Erschienen in: Proceedings of the American Mathematical Society, 116 (1992) 3, Seite 769-774
  • Sprache: Englisch
  • DOI: 10.1090/s0002-9939-1992-1098393-3
  • ISSN: 1088-6826; 0002-9939
  • Schlagwörter: Applied Mathematics ; General Mathematics
  • Entstehung:
  • Anmerkungen:
  • Beschreibung: <p>We present a relatively elementary proof that every <inline-formula content-type="math/mathml"> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="upper E 0"> <mml:semantics> <mml:mrow class="MJX-TeXAtom-ORD"> <mml:msub> <mml:mi>E</mml:mi> <mml:mn>0</mml:mn> </mml:msub> </mml:mrow> <mml:annotation encoding="application/x-tex">{E_0}</mml:annotation> </mml:semantics> </mml:math> </inline-formula>-semigroup acting on a type <inline-formula content-type="math/mathml"> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="upper I Subscript normal infinity"> <mml:semantics> <mml:mrow class="MJX-TeXAtom-ORD"> <mml:msub> <mml:mi>I</mml:mi> <mml:mi mathvariant="normal">∞<!-- ∞ --></mml:mi> </mml:msub> </mml:mrow> <mml:annotation encoding="application/x-tex">{I_\infty }</mml:annotation> </mml:semantics> </mml:math> </inline-formula> factor can be extended to a one-parameter group of <inline-formula content-type="math/mathml"> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="asterisk"> <mml:semantics> <mml:mo>∗<!-- ∗ --></mml:mo> <mml:annotation encoding="application/x-tex">*</mml:annotation> </mml:semantics> </mml:math> </inline-formula>-automorphisms acting on a larger type <inline-formula content-type="math/mathml"> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="upper I Subscript normal infinity"> <mml:semantics> <mml:mrow class="MJX-TeXAtom-ORD"> <mml:msub> <mml:mi>I</mml:mi> <mml:mi mathvariant="normal">∞<!-- ∞ --></mml:mi> </mml:msub> </mml:mrow> <mml:annotation encoding="application/x-tex">{I_\infty }</mml:annotation> </mml:semantics> </mml:math> </inline-formula> factor.</p>
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