(1) The source defines dimension_unique (the theorem referenced in comments as dimension_forced) which states: if a dimension D satisfies all three RS compatibility conditions (non-trivial linking for ledger conservation, eight-tick period exactly 8, and 2^D dividing the 360-tick synchronization period), then D must equal 3.
(2) It matters because Recognition Science derives spatial dimension D = 3 directly from the Law of Logic via topological linking (Alexander duality) plus 8-tick and gap-45 synchronization, without fitted parameters or external physical assumptions.
(3) The formal statement is theorem dimension_unique (D : Dimension) : RSCompatibleDimension D → D = 3. In standard math: ∀ D ∈ ℕ, (SupportsNontrivialLinking D ∧ EightTickFromDimension D = 8 ∧ 2^D | 360) ⇒ D = 3. The proof applies linking_requires_D3 to the linking premise.
(4) Dependencies visible in the source: imports IndisputableMonolith.Foundation.AlexanderDuality, PhiForcing, LedgerForcing, SimplicialLedger; uses linking_requires_D3, D3_has_linking, D3_compatible, eight_tick_forces_D3, and sync_period_eq_360. Certificates include decidability instance for SupportsNontrivialLinking and explicit witnesses such as the Hopf link.
(5) It does not prove the physical motivation for gap-45 (addressed in Gap45.PhysicalMotivation), Clifford algebra spinor details beyond the HasRSSpinorStructure characterization, or any results from modules containing sorry (e.g., SchrodingerEmergence). It also does not derive numerical constants or empirical predictions.