M.6 Dilation identity, residues, and matched scale variation

This section imports the XVI-L scale family ${\varpi }_{\mu }$, ${\mathfrak{R}}_{\mathrm{L},\mu }$, $A_{\mu }=\mu \mathrm{d}/\mathrm{d}\mu {\mathfrak{R}}_{\mathrm{L},\mu }$, and the scale-variation coefficients of XVI-L, L.6, without modifying XVI-L. The term scaling residue means the anomaly form $\mathcal{A}(u)=(E+4+N)\mathfrak{R}(u)$ (or its contact coefficients), as reserved in XVI-L, rem:Lressretch. Scale-variation coefficients are not physical gravitational beta functions (XVI-L, rem:Lscale; Target II unfinished).

identity for the XVI-L prescription.