Pith Number

pith:3YIFGIGW

pith:2005:3YIFGIGWNZSPHJ6P3FYE2INFAP

not attested not anchored not stored refs pending

The Entanglement of Superpositions

John A. Smolin, Noah Linden, Sandu Popescu

arxiv:quant-ph/0507049 v2 · 2005-07-05 · 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{3YIFGIGWNZSPHJ6P3FYE2INFAP}

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	2026-07-04T16:57:37.386881Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

de105320d66e64f3a7cfd9704d21a503d339c8f3cbd41050cfbc53b9cb44252f

Aliases

arxiv: quant-ph/0507049 · arxiv_version: quant-ph/0507049v2 · doi: 10.48550/arxiv.quant-ph/0507049 · pith_short_12: 3YIFGIGWNZSP · pith_short_16: 3YIFGIGWNZSPHJ6P · pith_short_8: 3YIFGIGW

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/3YIFGIGWNZSPHJ6P3FYE2INFAP \
  | 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: de105320d66e64f3a7cfd9704d21a503d339c8f3cbd41050cfbc53b9cb44252f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fc9483486bf691f8c33cfe8e9db82a2353181786cf2249dad57c22408ded40f3",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "2005-07-05T18:01:17Z",
    "title_canon_sha256": "6a2fd1f97dbbd7514be842fbe628c39778ec71253950640df81f644e6f76e3ad"
  },
  "schema_version": "1.0",
  "source": {
    "id": "quant-ph/0507049",
    "kind": "arxiv",
    "version": 2
  }
}