Pith Number

pith:Q5U4TMLV

pith:2006:Q5U4TMLVAHCNS2QTPIHZKBUFEO

not attested not anchored not stored refs pending

Hyperbolic attractor in a system of coupled non-autonomous van der Pol oscillators: Numerical test for expanding and contracting cones

Igor R. Sataev, Sergey P. Kuznetsov

arxiv:nlin/0609004 v1 · 2006-09-04 · 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{Q5U4TMLVAHCNS2QTPIHZKBUFEO}

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	2026-05-18T01:38:17.875701Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8769c9b17501c4d96a137a0f95068523a023d21e1e52970d8e5d5832ccd4d16e

Aliases

arxiv: nlin/0609004 · arxiv_version: nlin/0609004v1 · doi: 10.48550/arxiv.nlin/0609004 · pith_short_12: Q5U4TMLVAHCN · pith_short_16: Q5U4TMLVAHCNS2QT · pith_short_8: Q5U4TMLV

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/Q5U4TMLVAHCNS2QTPIHZKBUFEO \
  | 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: 8769c9b17501c4d96a137a0f95068523a023d21e1e52970d8e5d5832ccd4d16e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5321a169e57904515a726dd4680db3379796ad88a2a527c58f750dcab9d493e1",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "nlin.CD",
    "submitted_at": "2006-09-04T11:27:35Z",
    "title_canon_sha256": "0277421940eb54baacdcffca0ba39846f066103686484324ad1dc42f94593a22"
  },
  "schema_version": "1.0",
  "source": {
    "id": "nlin/0609004",
    "kind": "arxiv",
    "version": 1
  }
}