%0 Journal Article %A Cobos, Fernando %A Kuehn, Thomas %A Peetre, Jaak %T On G(p)-classes of trilinear forms %D 1999 %@ 0024-6107 %U https://hdl.handle.net/20.500.14352/57244 %X In a previous paper, the authors laid the foundations of a theory of Schatten±von Neumann classes 'p(0!p%¢) of trilinear forms in Hilbert space. This paper continues that research. In the n-dimensionalcase, it is shown that the best constant d# that relates the Hilbert±Schmidt norm of a form with its boundednorm behaves like n. Some results are also obtained in the quasi-Banach case (0!p!1), and for twoboundedforms. Finally, the domination problem is investigated in the trilinear set-up. %~