Pith Number

pith:P7YGTFLW

pith:2013:P7YGTFLWEMAL6DRH3T4VJMH2WY

not attested not anchored not stored refs pending

Circular, elliptic and oval billiards in a gravitational field

C. P. Dettmann, D. R. da Costa, E. D. Leonel

arxiv:1308.0362 v1 · 2013-08-01 · nlin.CD

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{P7YGTFLWEMAL6DRH3T4VJMH2WY}

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	2026-05-18T00:41:23.693181Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7ff06995762300bf0e27dcf954b0fab60b4958aff50ecf534d7fbe081e32a952

Aliases

arxiv: 1308.0362 · arxiv_version: 1308.0362v1 · doi: 10.48550/arxiv.1308.0362 · pith_short_12: P7YGTFLWEMAL · pith_short_16: P7YGTFLWEMAL6DRH · pith_short_8: P7YGTFLW

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/P7YGTFLWEMAL6DRH3T4VJMH2WY \
  | 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: 7ff06995762300bf0e27dcf954b0fab60b4958aff50ecf534d7fbe081e32a952

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d091e403ab88ca4cb2e49a28ad1c5927072f8351472b46124394a896ad45e1ef",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "nlin.CD",
    "submitted_at": "2013-08-01T21:26:17Z",
    "title_canon_sha256": "2fbc819875d442514dae6ce362a111d46911819a83df5769d43d733e19a80169"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1308.0362",
    "kind": "arxiv",
    "version": 1
  }
}