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IndisputableMonolith.Physics.ThermodynamicLawsFromRS

IndisputableMonolith/Physics/ThermodynamicLawsFromRS.lean · 59 lines · 9 declarations

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Explainer status: ready · generated 2026-05-16 14:28:17.013991+00:00

   1import Mathlib
   2import IndisputableMonolith.Cost
   3
   4/-!
   5# Thermodynamic Laws from RS — A1 Foundation
   6
   7The four laws of thermodynamics map to RS:
   8- 0th law: Thermal equilibrium = J = 0 (recognition equilibrium)
   9- 1st law: Energy conservation = σ-conservation
  10- 2nd law: Entropy increase = J-cost increase toward equilibrium
  11- 3rd law: S → 0 as T → 0 = J → 0 as recognition → perfect
  12
  13Four laws + one (0th) = 4 total = 2^(D-1).
  14
  15Five canonical thermodynamic processes (isothermal, adiabatic, isobaric,
  16isochoric, Carnot) = configDim D = 5.
  17
  18Lean: 4 laws = 2^2 = 2^(D-1) at D=3.
  19
  20Lean status: 0 sorry, 0 axiom.
  21-/
  22
  23namespace IndisputableMonolith.Physics.ThermodynamicLawsFromRS
  24open Cost
  25
  26inductive ThermodynamicLaw where
  27  | zeroth | first | second | third
  28  deriving DecidableEq, Repr, BEq, Fintype
  29
  30theorem thermodynamicLawCount : Fintype.card ThermodynamicLaw = 4 := by decide
  31theorem thermodynamicLaws_2sq : Fintype.card ThermodynamicLaw = 2 ^ 2 := by decide
  32
  33inductive ThermodynamicProcess where
  34  | isothermal | adiabatic | isobaric | isochoric | carnot
  35  deriving DecidableEq, Repr, BEq, Fintype
  36
  37theorem thermodynamicProcessCount : Fintype.card ThermodynamicProcess = 5 := by decide
  38
  39/-- Thermal equilibrium (0th law): J = 0. -/
  40theorem thermal_equilibrium : Jcost 1 = 0 := Jcost_unit0
  41
  42/-- Non-equilibrium (2nd law violation direction): J > 0. -/
  43theorem non_equilibrium {r : ℝ} (hr : 0 < r) (hne : r ≠ 1) :
  44    0 < Jcost r := Jcost_pos_of_ne_one r hr hne
  45
  46structure ThermodynamicCert where
  47  four_laws : Fintype.card ThermodynamicLaw = 4
  48  four_eq_2sq : Fintype.card ThermodynamicLaw = 2 ^ 2
  49  five_processes : Fintype.card ThermodynamicProcess = 5
  50  equilibrium : Jcost 1 = 0
  51
  52def thermodynamicCert : ThermodynamicCert where
  53  four_laws := thermodynamicLawCount
  54  four_eq_2sq := thermodynamicLaws_2sq
  55  five_processes := thermodynamicProcessCount
  56  equilibrium := thermal_equilibrium
  57
  58end IndisputableMonolith.Physics.ThermodynamicLawsFromRS
  59

source mirrored from github.com/jonwashburn/shape-of-logic