import Mathlib.Data.Real.Basic

-- To make this a valid Lean file, we need some placeholder definitions.
-- These would be replaced by actual implementations from the project.

universe u

/-- A placeholder for a physical system. -/
structure PhysicalSystem where
  input : Type u
  output : Type u

/-- A placeholder for the total lepton number. -/
def total_lepton_num (_ : Type u) : Int := 0

/-- A placeholder for the Lepton type. -/
structure Lepton where
  -- placeholder fields

/-- A placeholder for the winding number of a lepton. -/
def winding_number (_ : Lepton) : Real := 0.0

/-- A placeholder for the mass of a lepton. -/
def mass (_ : Lepton) : Real := 0.0

/-- A placeholder for the base mass. -/
def base_mass : Real := 0.0

-- Physics/Postulates.lean

/-- A structure containing the 50 core physical axioms of this project. -/
structure PhysicsModel where
  lepton_conservation : ∀ {system : PhysicalSystem}, total_lepton_num system.input = total_lepton_num system.output
  mass_winding_rule : ∀ (l : Lepton), winding_number l > 0 → mass l > base_mass
  -- ... add the other 48 axioms here

-- Now, your proofs can simply take (M : PhysicsModel) as an argument.