Geodesic
Accretive approximation in C*-algebras
Studia Mathematica, Tome 117 (1995) no. 2, pp. 115-121

Voir la notice de l'article provenant de la source Institute of Mathematics Polish Academy of Sciences

The problem of approximation by accretive elements in a unital C*-algebra suggested by P. R. Halmos is substantially solved. The key idea is the observation that accretive approximation can be regarded as a combination of positive and self-adjoint approximation. The approximation results are proved both in the C*-norm and in another, topologically equivalent norm.
DOI : 10.4064/sm-117-2-115-121

Reiner Berntzen 1

1 
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Reiner Berntzen. Accretive approximation in C*-algebras. Studia Mathematica, Tome 117 (1995) no. 2, pp. 115-121. doi: 10.4064/sm-117-2-115-121

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