The Einsteinian Canon Closure Theorem

This paper proves the Canon Closure Theorem for the Einsteinian system. Using the primitive operator set and the full 33-paper derivation stack, it shows that the canon is algebraically and geometrically closed under all admissible constructions. No new primitives, invariants, or admissible papers can extend the system without reducing to existing results. The theorem establishes non-redundancy, full coverage of the primitive span, and the minimality of the canon as a complete and non-extendable geometric framework.