PhysicsLogic / Hohenberg-Kohn 1964

The Exact HK Determination Argument

Inspect the ten physical fields and explicit premises used by the paper's exact determination proof.

Definitions and assumptions

Scope and physical limitations

This is the complete conditional density-determination argument, not the whole HK paper or a continuum Hamiltonian construction. The omitted response and approximation data are not supplied with placeholder values. State labels must represent physical states; the separate quotient review exposes the phase-class bridge.

Other arguments
Examples and distinctions

Constructed examples of this model; each answer includes the Lean statement.

Exact root statement

∀ {Potential : Type u} {State : Type v} {Density : Type w} (data : GroundStateComparison Potential State Density)
  (left right : State) (number : ℕ),
  data.NondegenerateGroundStateAtParticleNumber left number →
    data.NondegenerateGroundStateAtParticleNumber right number →
      data.densityOf left = data.densityOf right →
        data.NonconstantPotentialsGiveDistinctGroundStates →
          data.GroundStateEnergyEquation →
            data.PotentialEnergyDifferenceEquation →
              data.StrictNondegenerateVariationalPrinciple →
                data.ConstantShiftPreservesGroundStates → data.NondegenerateGroundStateUniqueness → left = right
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Notes and questions

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Definitions, structures, and assumptions

Structures, classes, and inductive alternatives

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Definitions and domain choices

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Checked statements: parameters, hypotheses, and interpretation

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Constructors, projections, and other meaning dependencies

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External mathematical declarations

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