from research import *
s=begin(647,'Normalize the nested bilateral spans','What structure is shared by the source’s14,140 and980 layers?',{'widths':[14,140,980],'halves':[7,70,490]},['File70 Appendix D.5'])
widths=[14,140,980]; halves=[7,70,490]
finish(s,{'normalized_halves':[[F(w,2*h),F(w,2*h)] for w,h in zip(widths,halves)],'scale_from14':[F(w,14) for w in widths]},'The three layers share the bilateral1|1 shape at scales1,10,70. This establishes nested geometric scale, without creating an appointment at an unsupplied midpoint.','Test the more informative five-node Creation–Terah refinement rather than stopping at bilateral similarity.',{'halves':[2*h for h in halves]==widths,'scales':[F(w,14) for w in widths]==[1,10,70]})