38 ∃ s : α, model.log_charge s = Q 39 40/-- **Theorem (Parameter-free observables are neutral)**: 41If every observable state must be specifiable without free parameters, 42and specifying a nonzero log-charge requires a free real knob, then 43all observable states have zero log-charge. -/
used by (2)
From the project-wide theorem graph. These declarations reference this one in their body.