Yang–Mills scattering form conjecture for the spinor scattering form

Let $\Lambda_n^4$ be spinor kinematic space, let $p$ and $q$ be the projections from the scattering correspondence, and define the Yang–Mills scattering form by

$$\Upsilon_n:=q_*p^*\Omega(\operatorname{Gr}(2,n)_{\geq 0}).$$

Yang–Mills scattering form conjecture. The $(2n-4)$-form $\Upsilon_n$ coincides with the $\mathcal{N}=4$ SYM scattering form defined by HZ.

The conjecture identifies the form obtained from the positive Grassmannian with the previously defined $\mathcal{N}=4$ supersymmetric Yang–Mills scattering form; no resolution is given in the supplied text.