Every even number is a sum of two primes — but CAN they share a class?
Classic Goldbach: every even n > 2 equals p + q for primes p, q. The axiom asks a sharper question: can p and q be in the same signature class (same residue mod 210)?
Answer: only if n has at most one null coordinate (divisible by at most one of {2,3,5,7}).
If n is divisible by two odd primes k and e (both in {3,5,7}):
Same-class means p = q (mod k) AND p = q (mod e).
But p + q = 0 (mod k) AND p + q = 0 (mod e).
Together: 2p = 0 (mod k), so p = 0 (mod k). But p is prime, so p = k.
Similarly p = e. But p can't equal both k and e. Contradiction!
With only 1 null, enough room remains for same-class pairs to exist.
The 48 unit classes mod 210 (coprime to 210). Primes cluster here. Same-class sums draw from these:
| Aspect | Classical Goldbach | Same-Class Goldbach |
|---|---|---|
| Statement | Every even n>2 = p+q | n = p+q with p,q same class (mod 210) |
| Condition | None (always works) | n has at most 1 null coordinate |
| Why it works | Heuristic (unproved) | CRT forces: 2+ nulls make same-class impossible |
| Success rate | 100% (conjectured) | 48/105 = phi(210)/HYDOR = 45.7% |
| Deeper meaning | Primes are dense enough | Ring structure controls which sums are ALLOWED |
| Source | Goldbach 1742, unproved | CRT channel analysis, verified to 50000 |