Pith Number

pith:NPBJV5QY

pith:2023:NPBJV5QYBOQXWR2FBNF2RVIVQQ

not attested not anchored not stored refs pending

Dirac bracket and time dependent constraints

Nuno Barros e S\'a

arxiv:2302.10966 v2 · 2023-02-21 · gr-qc · math-ph · math.MP · 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{NPBJV5QYBOQXWR2FBNF2RVIVQQ}

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	2026-07-05T11:55:34.428640Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6bc29af6180ba17b47450b4ba8d5158421acb40d364994ba80a57bfc1f1e4b2f

Aliases

arxiv: 2302.10966 · arxiv_version: 2302.10966v2 · doi: 10.48550/arxiv.2302.10966 · pith_short_12: NPBJV5QYBOQX · pith_short_16: NPBJV5QYBOQXWR2F · pith_short_8: NPBJV5QY

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/NPBJV5QYBOQXWR2FBNF2RVIVQQ \
  | 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: 6bc29af6180ba17b47450b4ba8d5158421acb40d364994ba80a57bfc1f1e4b2f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "588152115492f60778460cf4f734f48494ed097ddf15deec36d3e54428ee1ef4",
    "cross_cats_sorted": [
      "math-ph",
      "math.MP",
      "quant-ph"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2023-02-21T19:50:09Z",
    "title_canon_sha256": "84d3aa60016e5d35fc8374223ed2b209eda8d3b4216af4ac5a996de21b9a3399"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2302.10966",
    "kind": "arxiv",
    "version": 2
  }
}