Pith Number

pith:YLTW7BDP

pith:2005:YLTW7BDPPQLOFBXBOH4MMTESU2

not attested not anchored not stored refs pending

Toy Model for a Relational Formulation of Quantum Theory

David Poulin

arxiv:quant-ph/0505081 v2 · 2005-05-11 · quant-ph · gr-qc

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YLTW7BDPPQLOFBXBOH4MMTESU2}

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	2026-07-04T16:57:34.341386Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c2e76f846f7c16e286e171f8c64c92a6872e7bb95204018b0c4007ffd789b60c

Aliases

arxiv: quant-ph/0505081 · arxiv_version: quant-ph/0505081v2 · doi: 10.48550/arxiv.quant-ph/0505081 · pith_short_12: YLTW7BDPPQLO · pith_short_16: YLTW7BDPPQLOFBXB · pith_short_8: YLTW7BDP

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/YLTW7BDPPQLOFBXBOH4MMTESU2 \
  | 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: c2e76f846f7c16e286e171f8c64c92a6872e7bb95204018b0c4007ffd789b60c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "415243e88cec585e0b4bcc26c1779e42765714555172df58de758cdff36419f5",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "2005-05-11T07:40:10Z",
    "title_canon_sha256": "9f671d7c54a3396728107f5e3750ed05906110a51ee9b3bc02c0a9f570ef023b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "quant-ph/0505081",
    "kind": "arxiv",
    "version": 2
  }
}