Pith Number

pith:MY2RBCC4

pith:2008:MY2RBCC4I4JG43DSPI2OWIVLL7

not attested not anchored not stored refs pending

Unchained polygons and the N-body problem

Alain Chenciner (IMCCE), IMJ), Jacques F\'ejoz (IMCCE

arxiv:0807.0427 v3 · 2008-07-02 · math.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{MY2RBCC4I4JG43DSPI2OWIVLL7}

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	2026-05-18T04:11:18.153404Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

663510885c47126e6c727a34eb22ab5fdd6cea35f456933e9284c06f61af6c9a

Aliases

arxiv: 0807.0427 · arxiv_version: 0807.0427v3 · doi: 10.48550/arxiv.0807.0427 · pith_short_12: MY2RBCC4I4JG · pith_short_16: MY2RBCC4I4JG43DS · pith_short_8: MY2RBCC4

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/MY2RBCC4I4JG43DSPI2OWIVLL7 \
  | 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: 663510885c47126e6c727a34eb22ab5fdd6cea35f456933e9284c06f61af6c9a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ed4729e21c0cc912f48e025b89fea00c61a35a65da0c4121819bfbd2cc9bf5e3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DS",
    "submitted_at": "2008-07-02T19:26:57Z",
    "title_canon_sha256": "f6f2195373b6cd77a7c5a6f97a34b2aea0e088ae94eb378847e0d687484db71b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0807.0427",
    "kind": "arxiv",
    "version": 3
  }
}