Pith Number

pith:BROQPXYH

pith:2012:BROQPXYHFDE7OKUHNFKK5KSSOQ

not attested not anchored not stored refs pending

Canonical equations of Hamilton with beautiful symmetry

Guo Liang, Qi Guo

arxiv:1212.1955 v1 · 2012-12-10 · physics.class-ph · nlin.SI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BROQPXYHFDE7OKUHNFKK5KSSOQ}

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	2026-05-18T03:38:54.646643Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0c5d07df0728c9f72a876954aeaa527433b395cb79fabc635bbc43bab5f441dd

Aliases

arxiv: 1212.1955 · arxiv_version: 1212.1955v1 · doi: 10.48550/arxiv.1212.1955 · pith_short_12: BROQPXYHFDE7 · pith_short_16: BROQPXYHFDE7OKUH · pith_short_8: BROQPXYH

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/BROQPXYHFDE7OKUHNFKK5KSSOQ \
  | 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: 0c5d07df0728c9f72a876954aeaa527433b395cb79fabc635bbc43bab5f441dd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cf18bea6f166388f6d02daf8f4ca971d268e59009c0e0cb889cb94bcfdde7ed7",
    "cross_cats_sorted": [
      "nlin.SI"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.class-ph",
    "submitted_at": "2012-12-10T03:00:07Z",
    "title_canon_sha256": "df3ad3c56a83b6d309eba623249dfa70d39f0538efc56a0035d99c853eb2bf44"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1212.1955",
    "kind": "arxiv",
    "version": 1
  }
}