Pith Number

pith:NEURAPCY

pith:2004:NEURAPCYFXEPDF5KLITUJ4ZKN7

not attested not anchored not stored refs pending

Constant of Motion for several one-dimensional systems and outlining the problem associated with getting their Hamiltonians

C.A. Vargas, G. L\'opez, H. Hern\'andez, J.C. Salazar, L.A. Barrera, Y. Garibo

arxiv:physics/0402031 v1 · 2004-02-05 · physics.class-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NEURAPCYFXEPDF5KLITUJ4ZKN7}

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

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	2026-05-18T04:15:07.079005Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6929103c582dc8f197aa5a2744f32a6ff8e7c1a71609f577d88b61676dda316e

Aliases

arxiv: physics/0402031 · arxiv_version: physics/0402031v1 · doi: 10.48550/arxiv.physics/0402031 · pith_short_12: NEURAPCYFXEP · pith_short_16: NEURAPCYFXEPDF5K · pith_short_8: NEURAPCY

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/NEURAPCYFXEPDF5KLITUJ4ZKN7 \
  | 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: 6929103c582dc8f197aa5a2744f32a6ff8e7c1a71609f577d88b61676dda316e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "de4638714ec07ba86b8b72a20d0bdb74050678170443698036c669fda333dd90",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "physics.class-ph",
    "submitted_at": "2004-02-05T23:12:31Z",
    "title_canon_sha256": "e7e14f45d3054f065fa9287f74cb486aef10920167539ba5dd11843b28b4a008"
  },
  "schema_version": "1.0",
  "source": {
    "id": "physics/0402031",
    "kind": "arxiv",
    "version": 1
  }
}