Pith Number

pith:LKAEOE4B

pith:2007:LKAEOE4BMQZQIOWK4NW44L2RQZ

not attested not anchored not stored refs pending

Rosenfeld, Bergmann, Dirac and the Invention of Constrained Hamiltonian Dynamics

D. C. Salisbury

arxiv:physics/0701299 v1 · 2007-01-25 · physics.hist-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{LKAEOE4BMQZQIOWK4NW44L2RQZ}

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	2026-05-18T00:59:12.220679Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5a804713816433043acae36dce2f51864c2b3ba840f3c1074be01046514a6f59

Aliases

arxiv: physics/0701299 · arxiv_version: physics/0701299v1 · doi: 10.48550/arxiv.physics/0701299 · pith_short_12: LKAEOE4BMQZQ · pith_short_16: LKAEOE4BMQZQIOWK · pith_short_8: LKAEOE4B

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/LKAEOE4BMQZQIOWK4NW44L2RQZ \
  | 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: 5a804713816433043acae36dce2f51864c2b3ba840f3c1074be01046514a6f59

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b04a21f18f17dc39e7e1eafeb3dab50f7e4d36eae8ccd17674ddc5ad4e1a1c15",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "",
    "primary_cat": "physics.hist-ph",
    "submitted_at": "2007-01-25T18:44:29Z",
    "title_canon_sha256": "5e1c1e55bc24d18f69469a587e9f7b70035dd57b7b49e05a9e814cf4654fb5d1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "physics/0701299",
    "kind": "arxiv",
    "version": 1
  }
}