s668.py

from research import *
s=begin(668,'Generate the whole alternating720/30 ladder','Can the source’s ten coordinates be recovered without separate date fitting?',{'head':4326,'core':690,'flank':30,'source':[4326,4296,3606,3576,2886,2856,2166,2136,1446,1416]},['Supplement A §1.3; admitted source ladder only'])
a=[4326-720*k-e for k in range(5) for e in [0,30]]; gaps=[a[i]-a[i+1] for i in range(9)]
finish(s,{'generated_nodes':a,'gaps':gaps,'same_rail_steps':[[a[i]-a[i+2] for i in range(p,8,2)] for p in [0,1]],'width':a[0]-a[-1]},'The ten supplied positions are two720-step rails separated by30. Their interleaving generates the alternating30|690 path and2910 outer width. Source, dependency and generated-companion roles remain attached to the original positions; no new SKL transport is inferred.','Extract the six-node1470 cell and explain its alternative partitions.',{'whole_ladder':a==[4326,4296,3606,3576,2886,2856,2166,2136,1446,1416],'gaps':gaps==[30,690,30,690,30,690,30,690,30],'width':a[0]-a[-1]==2910})