Numerical complexity of the joint nulled weak-lensing probability distribution function

In the context of tomographic cosmic shear surveys, there exists a nulling transformation weak lensing observations (also called BNT transform) that allows us to simplify correlation structure observations, as well build observables depend only on localized range redshifts and thus independent from low-redshift/small-scale modes. This procedure renders possible accurate, from-first-principles, predictions convergence aperture mass one-point distributions (PDF). We here explore other consequences this (reduced) numerical complexity estimation joint PDF between nulled bins demonstrate how use these results make theoretical predictions.