Pith Number

pith:C77SPCNE

pith:2009:C77SPCNECEVARBBACGURZMYIMG

not attested not anchored not stored refs pending

Fractional Standard Map

Mark Edelman, Vasily E. Tarasov

arxiv:0909.5412 v2 · 2009-09-29 · 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{C77SPCNECEVARBBACGURZMYIMG}

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	2026-05-18T02:11:36.336971Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

17ff2789a4112a08842011a91cb30861a9b83f4484e4f864b15586cbba3f9741

Aliases

arxiv: 0909.5412 · arxiv_version: 0909.5412v2 · doi: 10.48550/arxiv.0909.5412 · pith_short_12: C77SPCNECEVA · pith_short_16: C77SPCNECEVARBBA · pith_short_8: C77SPCNE

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/C77SPCNECEVARBBACGURZMYIMG \
  | 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: 17ff2789a4112a08842011a91cb30861a9b83f4484e4f864b15586cbba3f9741

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bdee283a898cf9e7ff16b959af86d8eff363ced3593eeab9db1f76e52f3082b5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "nlin.CD",
    "submitted_at": "2009-09-29T19:12:03Z",
    "title_canon_sha256": "8b9b9a375c3d50c663b1bf0adf475e4a474aed9e3fc485fbff7d4ebffae7c2f4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.5412",
    "kind": "arxiv",
    "version": 2
  }
}