Geodesic
A Note on Unitary Cross Sections for Operators
Canadian journal of mathematics, Tome 30 (1978) no. 6, pp. 1215-1227

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

This note addresses the question of characterizing the elements of a C*-algebra which have local unitary cross sections in the sense described below. Let denote a C*-algebra with identity and let denote the unitary group in . 
Fialkow, Lawrence A. A Note on Unitary Cross Sections for Operators. Canadian journal of mathematics, Tome 30 (1978) no. 6, pp. 1215-1227. doi: 10.4153/CJM-1978-101-8
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