Geodesic
Extreme points of the complex binary trilinear ball
Fernando Cobos ;  ; 
Studia Mathematica, Tome 138 (2000) no. 1, pp. 81-92

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

DOI

We characterize all the extreme points of the unit ball in the space of trilinear forms on the Hilbert space $ℂ^2$. This answers a question posed by R. Grząślewicz and K. John [7], who solved the corresponding problem for the real Hilbert space $ℝ^2$. As an application we determine the best constant in the inequality between the Hilbert-Schmidt norm and the norm of trilinear forms. 
Fernando Cobos;  ;  . Extreme points of the complex binary trilinear ball. Studia Mathematica, Tome 138 (2000) no. 1, pp. 81-92. doi: 10.4064/sm-138-1-81-92
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