Research-Stack/0-Core-Formalism/lean/Semantics/Semantics/ManifoldBoundaryAtlas.lean
2026-05-11 22:14:31 -05:00

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import Semantics.RRCLogogramProjection
/-!
# ManifoldBoundaryAtlas
A ManifoldBoundaryAtlas is a deterministic seed-generated set of candidate
boundary coordinates for RRC-style projection checks. It generalizes
`HexLogogramAtlas`: the seed does not claim a tear, proof, or manifold truth;
it generates a finite boundary candidate surface that RRC can identify against
receipts and residual evidence.
Promotion is byte-law gated. If the boundary seed, law, residual, and receipt
do not beat an explicit boundary-coordinate table, the atlas remains a HOLD
surface.
-/
namespace Semantics.ManifoldBoundaryAtlas
/-- Finite laws for generating manifold boundary candidates. -/
inductive BoundaryLaw where
| affineCut
| genusInversion
| massGradient
| rrcProjectionEdge
deriving Repr, DecidableEq
/-- A generated boundary candidate in a finite coordinate domain. -/
structure BoundaryCandidate where
index : Nat
coordinate : Nat
side : Nat
confidence : Nat
deriving Repr, DecidableEq
/-- Seeded boundary-atlas packet. -/
structure BoundaryAtlasPacket where
hexSeed : Nat
hexDigitWidth : Nat
blockBase : Nat
law : BoundaryLaw
dimensionCount : Nat
coordinateDomain : Nat
boundaryCount : Nat
startIndex : Nat
length : Nat
stride : Nat
genus : Nat
massBasin : Nat
torsionClass : Nat
phaseClass : Nat
explicitBoundaryBytes : Nat
seedBytes : Nat
lawBytes : Nat
residualBytes : Nat
receiptBytes : Nat
rrcShapeOk : Bool
residualDeclared : Bool
deriving Repr, DecidableEq
/-- Hex block base for a fixed-width boundary seed. -/
def expectedHexBase (p : BoundaryAtlasPacket) : Nat :=
16 ^ p.hexDigitWidth
/-- Structural gate before byte-law promotion. -/
def boundaryAtlasStructurallyValid (p : BoundaryAtlasPacket) : Bool :=
p.hexDigitWidth > 0 &&
p.blockBase == expectedHexBase p &&
p.dimensionCount > 0 &&
p.coordinateDomain > 0 &&
p.boundaryCount > 0 &&
p.length > 0 &&
p.stride > 0 &&
p.explicitBoundaryBytes > 0 &&
p.rrcShapeOk &&
p.residualDeclared
/-- Raw deterministic boundary value before projection into finite domains. -/
def boundaryRawValueAt (p : BoundaryAtlasPacket) (i : Nat) : Nat :=
let j := p.startIndex + i
match p.law with
| BoundaryLaw.affineCut =>
p.hexSeed + (j * p.stride) + p.phaseClass
| BoundaryLaw.genusInversion =>
p.hexSeed + (p.genus * p.dimensionCount) + (j * p.stride) + p.phaseClass
| BoundaryLaw.massGradient =>
p.hexSeed + (p.massBasin * p.stride) + j + p.torsionClass
| BoundaryLaw.rrcProjectionEdge =>
p.hexSeed + (j * p.stride) + p.massBasin + p.torsionClass + p.phaseClass
/-- Generate the i-th RRC boundary candidate. -/
def boundaryCandidateAt (p : BoundaryAtlasPacket) (i : Nat) : BoundaryCandidate :=
let raw := boundaryRawValueAt p i
{ index := i
coordinate := raw % p.coordinateDomain
side := raw % p.boundaryCount
confidence := (raw / p.boundaryCount) % p.dimensionCount }
/-- Replay the finite boundary atlas. -/
def replayBoundaryAtlas (p : BoundaryAtlasPacket) : List BoundaryCandidate :=
(List.range p.length).map (boundaryCandidateAt p)
/-- Explicit table cost for boundary candidates. -/
def explicitBoundaryTableBytes (p : BoundaryAtlasPacket) : Nat :=
p.length * p.explicitBoundaryBytes
/-- Encoded boundary-atlas cost with residual and receipt accounting. -/
def boundaryAtlasEncodedBytes (p : BoundaryAtlasPacket) : Nat :=
p.seedBytes + p.lawBytes + p.residualBytes + p.receiptBytes
/-- The byte law: generated boundary candidates must beat explicit candidates. -/
def boundaryAtlasByteLawHolds (p : BoundaryAtlasPacket) : Bool :=
boundaryAtlasEncodedBytes p < explicitBoundaryTableBytes p
/-- Promotion gate for a deterministic boundary atlas. -/
def boundaryAtlasPromotable (p : BoundaryAtlasPacket) : Bool :=
boundaryAtlasStructurallyValid p && boundaryAtlasByteLawHolds p
/--
Boundary atlases feed RRC identification, not merge admission. A promoted
boundary atlas gives candidate boundary evidence; actual tear projection still
needs the RRC receipt fields.
-/
def rrcBoundaryReceiptFromAtlas (p : BoundaryAtlasPacket) : Semantics.RRCLogogramProjection.LogogramReceipt :=
{ shape := Semantics.RRCLogogramProjection.RRCShape.logogramProjection
status := Semantics.RRCLogogramProjection.WitnessStatus.candidate
regime := Semantics.RRCLogogramProjection.SemanticRegime.horribleManifoldTearing
payloadBound := p.rrcShapeOk
contradictionWitness := false
tearBoundary := boundaryAtlasPromotable p
detachedMass := false
residualLane := p.residualDeclared }
/-! ## Canonical witnesses -/
/-- Small hand-checkable boundary atlas. -/
def smallBoundaryAtlas : BoundaryAtlasPacket :=
{ hexSeed := 3
hexDigitWidth := 2
blockBase := 256
law := BoundaryLaw.affineCut
dimensionCount := 4
coordinateDomain := 16
boundaryCount := 4
startIndex := 0
length := 4
stride := 2
genus := 3
massBasin := 1
torsionClass := 0
phaseClass := 1
explicitBoundaryBytes := 2
seedBytes := 1
lawBytes := 1
residualBytes := 0
receiptBytes := 1
rrcShapeOk := true
residualDeclared := true }
/-- Compression-sized witness for an inverted-genus boundary surface. -/
def canonicalBoundaryAtlas : BoundaryAtlasPacket :=
{ hexSeed := 0xC0FFEE
hexDigitWidth := 6
blockBase := 16777216
law := BoundaryLaw.genusInversion
dimensionCount := 16
coordinateDomain := 4096
boundaryCount := 12
startIndex := 0
length := 96
stride := 7
genus := 3
massBasin := 5
torsionClass := 2
phaseClass := 4
explicitBoundaryBytes := 3
seedBytes := 3
lawBytes := 1
residualBytes := 4
receiptBytes := 2
rrcShapeOk := true
residualDeclared := true }
/-- Too short to beat explicit boundary coordinates. -/
def tinyBoundaryAtlas : BoundaryAtlasPacket :=
{ canonicalBoundaryAtlas with length := 2 }
/-- Bad coordinate domain: no finite manifold address space. -/
def badBoundaryDomainAtlas : BoundaryAtlasPacket :=
{ canonicalBoundaryAtlas with coordinateDomain := 0 }
/-- Missing residual declaration: cannot promote to RRC identification. -/
def missingResidualBoundaryAtlas : BoundaryAtlasPacket :=
{ canonicalBoundaryAtlas with residualDeclared := false }
theorem smallBoundaryReplay :
replayBoundaryAtlas smallBoundaryAtlas =
[{ index := 0, coordinate := 4, side := 0, confidence := 1 },
{ index := 1, coordinate := 6, side := 2, confidence := 1 },
{ index := 2, coordinate := 8, side := 0, confidence := 2 },
{ index := 3, coordinate := 10, side := 2, confidence := 2 }] := by
native_decide
theorem canonicalBoundaryAtlasPromotable :
boundaryAtlasPromotable canonicalBoundaryAtlas = true := by
native_decide
theorem tinyBoundaryAtlasNotPromotable :
boundaryAtlasPromotable tinyBoundaryAtlas = false := by
native_decide
theorem badBoundaryDomainAtlasNotPromotable :
boundaryAtlasPromotable badBoundaryDomainAtlas = false := by
native_decide
theorem missingResidualBoundaryAtlasNotPromotable :
boundaryAtlasPromotable missingResidualBoundaryAtlas = false := by
native_decide
theorem promotedBoundaryAtlasStructurallyValid (p : BoundaryAtlasPacket) :
boundaryAtlasPromotable p = true -> boundaryAtlasStructurallyValid p = true := by
unfold boundaryAtlasPromotable
intro h
cases hStruct : boundaryAtlasStructurallyValid p
· simp [hStruct] at h
· simp
theorem promotedBoundaryAtlasSatisfiesByteLaw (p : BoundaryAtlasPacket) :
boundaryAtlasPromotable p = true -> boundaryAtlasByteLawHolds p = true := by
unfold boundaryAtlasPromotable
intro h
cases hStruct : boundaryAtlasStructurallyValid p
· simp [hStruct] at h
cases hBytes : boundaryAtlasByteLawHolds p
· simp [hStruct, hBytes] at h
· simp
/-- A promoted atlas contributes tear-boundary evidence to the RRC receipt. -/
theorem promotedBoundaryAtlasSetsRrcTearBoundary (p : BoundaryAtlasPacket) :
boundaryAtlasPromotable p = true ->
(rrcBoundaryReceiptFromAtlas p).tearBoundary = true := by
intro h
unfold rrcBoundaryReceiptFromAtlas
simp [h]
/--
Boundary evidence alone is intentionally insufficient for projection admission:
contradiction and detached-mass evidence must still be supplied by later RRC
checks.
-/
theorem boundaryAtlasAloneDoesNotProject :
Semantics.RRCLogogramProjection.projectionAdmissible
(rrcBoundaryReceiptFromAtlas canonicalBoundaryAtlas) = false := by
native_decide
#eval replayBoundaryAtlas smallBoundaryAtlas
#eval boundaryAtlasPromotable canonicalBoundaryAtlas
#eval boundaryAtlasPromotable tinyBoundaryAtlas
#eval boundaryAtlasPromotable badBoundaryDomainAtlas
#eval boundaryAtlasPromotable missingResidualBoundaryAtlas
#eval Semantics.RRCLogogramProjection.projectionAdmissible
(rrcBoundaryReceiptFromAtlas canonicalBoundaryAtlas)
end Semantics.ManifoldBoundaryAtlas