Explanation of match_boson_Z
(1) In plain English, the declaration asserts that the rung constructor assigns the integer value 1 to the Z boson.
(2) In Recognition Science this matters because rungs on the recognition ladder set the exponent in the mass scaling formula (yardstick times a power of φ). Confirming that W, Z and H all sit at rung 1 reproduces the boson sector of the observed particle table inside the parameter-free constructor.
(3) The formal statement is theorem match_boson_Z : compute_rung .Z = 1 := by rfl. In ordinary mathematical notation this is simply compute_rung(Z) = 1. The proof tactic rfl means the equality holds definitionally from the constructor’s definition (no further reasoning required).
(4) Visible dependencies in the supplied source: the theorem is proved by reflexivity and appears alongside the parallel statements match_boson_W and match_boson_H. The SDGT variant sdgt_boson_Z also equals 1, and the whole family is collected by the master matching result match_rsbridge_rung.
(5) The declaration does not prove the physical mass of the Z boson, nor does it derive the rung value from the Law of Logic or J-cost functional equation; it only verifies that the constructor reproduces the legacy RSBridge table for this particle.