Pith Number

pith:VMXB2NKG

pith:2009:VMXB2NKGOCVB55DXSIJFCG2C2J

not attested not anchored not stored refs pending

Isomorphism between the Peres and Penrose proofs of the BKS theorem in three dimensions

Elizabeth Gould, P.K.Aravind

arxiv:0909.4502 v2 · 2009-09-24 · quant-ph

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VMXB2NKGOCVB55DXSIJFCG2C2J}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T02:11:37.960930Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ab2e1d354670aa1ef4779212511b42d243e10ab96d44f6c54e2f5a9454252067

Aliases

arxiv: 0909.4502 · arxiv_version: 0909.4502v2 · doi: 10.48550/arxiv.0909.4502 · pith_short_12: VMXB2NKGOCVB · pith_short_16: VMXB2NKGOCVB55DX · pith_short_8: VMXB2NKG

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/VMXB2NKGOCVB55DXSIJFCG2C2J \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: ab2e1d354670aa1ef4779212511b42d243e10ab96d44f6c54e2f5a9454252067

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9ba7bd874ddd0daeb2be1c5303fc61762a221bc545c86e8a155eee9216bf805e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2009-09-24T17:19:36Z",
    "title_canon_sha256": "5ac46d639cbff1c269b590c94f9c59a46dccaf4c1b4ef089bf65ea7198e93412"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.4502",
    "kind": "arxiv",
    "version": 2
  }
}