Pith Number

pith:JFF77K5G

pith:2013:JFF77K5GXC5OCIJAC5VWYJSCB4

not attested not anchored not stored refs pending

Canard-like phenomena in piecewise-smooth Van der Pol systems

Andrew Roberts, Paul Glendinning

arxiv:1311.5192 v3 · 2013-11-20 · 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{JFF77K5GXC5OCIJAC5VWYJSCB4}

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	2026-05-18T01:46:12.002617Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

494bffaba6b8bae12120176b6c26420f0a9276f9b870cc412392dfc1e40f5b9b

Aliases

arxiv: 1311.5192 · arxiv_version: 1311.5192v3 · doi: 10.48550/arxiv.1311.5192 · pith_short_12: JFF77K5GXC5O · pith_short_16: JFF77K5GXC5OCIJA · pith_short_8: JFF77K5G

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/JFF77K5GXC5OCIJAC5VWYJSCB4 \
  | 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: 494bffaba6b8bae12120176b6c26420f0a9276f9b870cc412392dfc1e40f5b9b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "80045626d637a5f6982b4a8822bc9877979aaa0586382d0e4d1c00f0d05c5fce",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DS",
    "submitted_at": "2013-11-20T19:52:00Z",
    "title_canon_sha256": "9dcde27161fb764e2517180b3e5e50871f0ac8737c63e6240943f3729567679f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1311.5192",
    "kind": "arxiv",
    "version": 3
  }
}