Context
The f=0 orientation was the remaining complementary branch after the first two minimum layers of f=1,2 were closed.
Proof or evidence
The first triple family has incompatible complete residue tables modulo 7 and 73. A 2-adic gate forces x=3 in the second, after which a difference-of-squares factorization of 65 gives one positive solution.
Verification notes
Independent Python and C++20 programs reproduce the 40/20/2 counts, both residue tables, the empty CRT intersection, the unique factorization survivor, and its four-one excess.
Limitations
- The eighteen pair-minimum cancellation strata are classified by FPRD-IC-T30.
- This is a theorem for the complementary f=0 branch of the normalized grammar only.
- No external review or novelty determination is recorded.