134theorem why_exactly_three : 135 -- 8-tick cycle has exactly 3 bits, corresponding to 3 dimensions 136 (8 : ℕ) = 2^3 := by norm_num
proof body
Term-mode proof.
137 138/-- **THEOREM (No Fourth Generation)**: Electroweak precision tests and 139 Higgs production rule out a 4th generation with SM-like couplings. 140 RS explains WHY: there's no "room" in the 8-tick structure for a 4th. -/
depends on (11)
Lean names referenced from this declaration's body.