from research import *
s=begin(635,'Reconstruct the exposure bridge from its flanks','How does the13+2340+13 path relate to the corresponding2366 translation?',{'path':[4251,4238,1898,1885]},['File70 §§6.1,6.4'])
v=[4251,4238,1898,1885];g=[a-b for a,b in zip(v,v[1:])]
finish(s,{'partition':g,'total':sum(g),'calendar_difference':F(13,2)*(364-360),'Joseph_ages':[1915-1898,1915-1885]},'The source path supplies13-year flanks around2340, giving2366. The26 added years are exactly6.5 copies of the360-to364 calendar difference. Joseph’s ages17 and30 provide the same13-year lower flank.','Compare all three calendar spans under their own calibrated Keys.',{'partition':g==[13,2340,13],'calendar_gain':sum(g)-2340==F(13,2)*(364-360)==26,'ages':[1915-1898,1915-1885]==[17,30]})