Pith Number

pith:WFIO7UYR

pith:2012:WFIO7UYR4AWFCDG4NLQHBJFCB7

not attested not anchored not stored refs pending

Integrability of a nonlinear evolution equation derived from isoperimetric plane curve motion

Jose Carlos Brunelli

arxiv:1202.5404 v1 · 2012-02-24 · nlin.SI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WFIO7UYR4AWFCDG4NLQHBJFCB7}

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	2026-05-18T04:01:37.282329Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b150efd311e02c510cdc6ae070a4a20fcf3ad51223dabd0623f9510009ed8cff

Aliases

arxiv: 1202.5404 · arxiv_version: 1202.5404v1 · doi: 10.48550/arxiv.1202.5404 · pith_short_12: WFIO7UYR4AWF · pith_short_16: WFIO7UYR4AWFCDG4 · pith_short_8: WFIO7UYR

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/WFIO7UYR4AWFCDG4NLQHBJFCB7 \
  | 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: b150efd311e02c510cdc6ae070a4a20fcf3ad51223dabd0623f9510009ed8cff

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2f3aa6556d1d142b4eace664f7328eef51df7fa2db9cbbca1de88f605cc2443d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "nlin.SI",
    "submitted_at": "2012-02-24T09:29:29Z",
    "title_canon_sha256": "eb88baa291b5653c220ca74c7eb67143f08abc31f948785351b792f22f0424e4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1202.5404",
    "kind": "arxiv",
    "version": 1
  }
}