Pith Number

pith:DRZ5SOTF

pith:2015:DRZ5SOTFHF53IZXB75V5JDB6TY

not attested not anchored not stored refs pending

Expanding the simple pendulum's rotation solution in action-angle variables

Martin Lara, Sebasti\'an Ferrer

arxiv:1503.03358 v1 · 2015-03-11 · 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{DRZ5SOTFHF53IZXB75V5JDB6TY}

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	2026-05-18T01:34:57.133413Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1c73d93a65397bb466e1ff6bd48c3e9e00772de59a90814675594fc69aa2c2a0

Aliases

arxiv: 1503.03358 · arxiv_version: 1503.03358v1 · doi: 10.48550/arxiv.1503.03358 · pith_short_12: DRZ5SOTFHF53 · pith_short_16: DRZ5SOTFHF53IZXB · pith_short_8: DRZ5SOTF

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/DRZ5SOTFHF53IZXB75V5JDB6TY \
  | 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: 1c73d93a65397bb466e1ff6bd48c3e9e00772de59a90814675594fc69aa2c2a0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d1740ffe3b0ebc1ed5fa8a0dda705fed9cb3caf558c08e617e4f39ef50ed1225",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "nlin.SI",
    "submitted_at": "2015-03-11T14:55:40Z",
    "title_canon_sha256": "76ff6b6380f9a1c28d11de4827c37aff0b00f8441169e1f6006754b7d1881730"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.03358",
    "kind": "arxiv",
    "version": 1
  }
}