Geodesic
Ranges of Lyapunov Transformations for operator algebras
Glasgow mathematical journal, Tome 19 (1978) no. 2, pp. 129-134

Voir la notice de l'article provenant de la source Cambridge University Press

In this paper we shall extend results obtained in [5] to the W*-algebra setting.Let be a C*-algebra and let + denote the set of positive elements in . Given a fixed element A in , the Lyapunov transformation LA corresponding to A is the mapping of into itself which sends X to AX+XA*. We are interested in characterizing those Bin for which 
Kyle, J. Ranges of Lyapunov Transformations for operator algebras. Glasgow mathematical journal, Tome 19 (1978) no. 2, pp. 129-134. doi: 10.1017/S0017089500003517
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