Commutators associated to a subfactor and its relative commutants
[Commutateurs associés à un sous-facteur et à ses commutants relatifs]
Annales de l'Institut Fourier, Tome 52 (2002) no. 1, pp. 289-301.

Soit NM une inclusion de facteurs de type II 1 ayant un indice de Jones fini. Alors on a l’égalité M=(N ' M)[N,M] en tant qu’espaces vectoriels. Ici [N,M] désigne l’espace vectoriel engendré par les commutateurs de la forme [a,b]aN,bM.

Let NM be an inclusion of II 1 factors with finite Jones index. Then M=(N ' M)[N,M] as a vector space. Here [N,M] denotes the vector space spanned by the commutators of the form [a,b] where aN,bM.

DOI : 10.5802/aif.1887
Classification : 46L37, 47B47
Keywords: commutator, conditional expectation, relative commutant
Mot clés : commutateur, attente conditionnelle, commutant relatif
Huang, Hsiang-Ping 1

1 University of California, Department of Mathematics, Los Angeles, CA 90095 (USA)
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Huang, Hsiang-Ping. Commutators associated to a subfactor and its relative commutants. Annales de l'Institut Fourier, Tome 52 (2002) no. 1, pp. 289-301. doi : 10.5802/aif.1887. http://www.numdam.org/articles/10.5802/aif.1887/

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