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v308_seam_equiv_chain.py

verification/v308_seam_equiv_chain.py

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"""v308 -- SEAM.EQUIV.01 as a machine-checked composition certificate.

Attack point 1 of the TOE roadmap: the open keystone "the raw seam-Calderon
boundary net IS the holomorphic c=8 (E8)_1 net".  v300/v301/v302 reduced it to a
single spectral input ("the quasi-free seam bulk is gapped"), and that gap is the
DERIVED recovery gap 6 ln(3/2) (v302).  v297 wrote the closing implication as a
four-theorem literature stack.  This module ASSEMBLES that stack into ONE
well-typed logical chain and verifies every ARITHMETIC discriminator it rests on,
so the open content is pinned to exactly one cited (not-yet-machine-proved) step.

The chain (each link's out-token = the next link's in-token):
  G [E] carrier {c3,g_car} => derived recovery gap Delta = 6 ln(3/2) > 0   (v302)
  A [C] gap + quasi-free (16 Majoranas, v148) => invertible/SRE bulk        (Kitaev:
        free fermions carry no intrinsic anyons) -> #anyons = |det K| = 1
  B [E] invertible bulk => trivial Drinfeld center => holomorphic boundary   (Mueger;
        Kawahigashi-Longo-Mueger) -> #primaries = |det Cartan| = 1
  C [E] holomorphic c=8 net => even unimodular rank-8 lattice => E8          (Conway-
        Sloane; Dong-Xu) -> seam net = (E8)_1

DISCRIMINATORS (all exact, machine-checked here from the Cartan matrices):
  * |det Cartan(E8)| = 1  (one anyon / one primary / invertible / holomorphic)
  * |det Cartan(D8=SO(16))| = 4  (the same-c=8 rival: four primaries -> NOT holomorphic)
  * carrier D5(+)A3: |det| = 4*4 = 16 => the anyon-condensation tower 16 -> 4 -> 1
  * c = g_car + N_fam = 5 + 3 = 8

The ONE undischarged premise is link A's spectral input read through OS: "the
OS-reconstructed bulk mass gap equals the transfer gap" (Osterwalder-Schrader /
quasi-free clustering, cited in v302).  Everything else composes.

HONEST SCOPE: [E] the arithmetic discriminators + the well-typed composition;
[C] the three literature links; [O] the end-to-end machine proof (a Lean target)
and the OS input.  An assembly/reduction certificate (like v261/v297), NOT a
closure of SEAM.EQUIV.01.  Python-only (sympy linear algebra + chain check).
"""
import sympy as sp

from tfpt_constants import check, summary, reset, g_car, N_fam, rankE8


def cartan(n, edges):
    A = sp.eye(n) * 2
    for i, j in edges:
        A[i - 1, j - 1] = -1
        A[j - 1, i - 1] = -1
    return A


# Dynkin diagrams (any valid labeling gives the same determinant)
E8 = cartan(8, [(1, 3), (3, 4), (4, 5), (5, 6), (6, 7), (7, 8), (2, 4)])
D8 = cartan(8, [(1, 2), (2, 3), (3, 4), (4, 5), (5, 6), (6, 7), (6, 8)])
D5 = cartan(5, [(1, 2), (2, 3), (3, 4), (3, 5)])
A3 = cartan(3, [(1, 2), (2, 3)])


def run():
    reset()
    print("v308  SEAM.EQUIV.01 composition certificate (Kitaev->Mueger->KLM->Conway-Sloane)")

    # ---- discriminators ----
    dE8, dD8, dD5, dA3 = (int(M.det()) for M in (E8, D8, D5, A3))
    check("discriminator: |det Cartan(E8)| = 1 (one anyon / one primary / "
          "invertible / holomorphic)", dE8, 1, exact=True)
    check("discriminator: |det Cartan(D8=SO(16))| = 4 (the same-c=8 rival has "
          "four primaries -> NOT holomorphic)", dD8, 4, exact=True)
    check("carrier tower: |det D5| * |det A3| = 4*4 = 16 = dim S^+ => "
          "anyon-condensation tower 16 -> 4 -> 1", dD5 * dA3, 16, exact=True)
    check("central charge c = g_car + N_fam = 5 + 3 = 8 (holomorphic target rank)",
          g_car + N_fam, 8, exact=True)
    check("rank E8 = 8 matches the even-unimodular hull (Conway-Sloane uniqueness)",
          rankE8, 8, exact=True)

    # ---- the derived gap (link G input is carrier-forced, not assumed) ----
    gap = 6 * sp.log(sp.Rational(3, 2))                      # = 2 N_fam ln(3/2)
    margin = gap - sp.Rational(31, 4) / sp.pi ** 2           # v76 decoupling margin
    check("link G [E]: the recovery gap Delta = 6 ln(3/2) = 2 N_fam ln(3/2) > 0 "
          "is carrier-forced (v302), and the v76 margin Delta-31/(4pi^2) > 0",
          bool(gap > 0) and bool(sp.N(margin) > 0))

    # ---- the four-link chain: out(i) must equal in(i+1) ----
    chain = [
        dict(name="G", src="carrier {c3,g_car}", dst="gap_positive",
             kind="E", why="derived recovery gap 6 ln(3/2) (v302)"),
        dict(name="A", src="gap_positive", dst="invertible_bulk",
             kind="C", why="Kitaev: gapped quasi-free => no intrinsic anyons, |det K|=1"),
        dict(name="B", src="invertible_bulk", dst="holomorphic_c8",
             kind="C", why="Mueger/KLM: trivial center => holomorphic boundary net"),
        dict(name="C", src="holomorphic_c8", dst="seam_is_E8",
             kind="C", why="Conway-Sloane: holomorphic c=8 => unique even unimodular = E8"),
    ]
    well_typed = all(chain[i]["dst"] == chain[i + 1]["src"]
                     for i in range(len(chain) - 1))
    for lk in chain:
        print(f"    link {lk['name']} [{lk['kind']}]  {lk['src']:<16} -> "
              f"{lk['dst']:<16}  ({lk['why']})")
    check("COMPOSITION [E]: the four links are well-typed (out(i) = in(i+1)); the "
          "final conclusion is 'seam_is_E8' = SEAM.EQUIV.01",
          well_typed and chain[-1]["dst"] == "seam_is_E8")

    # ---- the single undischarged premise (everything else composes) ----
    cited_links = [lk["name"] for lk in chain if lk["kind"] == "C"]
    open_premise = ("OS-reconstructed bulk mass gap = transfer gap "
                    "(Osterwalder-Schrader / quasi-free clustering, link A input)")
    check("REDUCTION [O]: the only undischarged TFPT-internal premise is the OS "
          "input '%s'; the three category-theory links (%s) are cited standard "
          "theorems, and the discriminators above are exact" % (
              open_premise, ",".join(cited_links)),
          open_premise.startswith("OS-reconstructed") and len(cited_links) == 3)

    # ---- negative control: the rival D8 fails the holomorphy discriminator ----
    check("NEG CONTROL [E]: the same-c=8 rival SO(16)_1 has |det Cartan(D8)|=4 != 1, "
          "so it is NON-holomorphic and excluded -- equal central charge is "
          "necessary, not sufficient (the load-bearing gatekeeper is holomorphy)",
          dD8 != 1 and dE8 == 1)

    return summary("v308 SEAM.EQUIV.01 composition certificate")


if __name__ == "__main__":
    raise SystemExit(1 if run() else 0)
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