def
definition
def or abbrev
acceptable
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formal statement (Lean)
20def acceptable (L : List SpeciesEntry) (zMax χ2Max : ℝ) : Prop :=
proof body
Definition body.
21 (∀ e ∈ L, |z e| ≤ zMax) ∧ chi2 L ≤ χ2Max
22
23/-! Pinned PDG 2024 leptons witness (central values; uncertainties approximate, positive).
24 We set mass_pred = mass_obs to produce a clean, fast, auditable witness. -/