On the trilinear and Ginzburg-Rallis models

Let $k$ be a non-archimedean local field of characteristic zero.

We give sufficient conditions under which the Ginzburg-Rallis models of the induced representations of $\mathrm{GL}_6(k)$ from a parabolic subgroup of type $[2^3]$ are isomorphic to the trilinear models of the inducing data.

We also give nonvanishing criterion for these trilinear models and Ginzburg-Rallis models.