Pith Number

pith:KY6O7AFH

pith:2009:KY6O7AFHTBFWLLSC7SADSD27ZT

not attested not anchored not stored refs pending

Generalisations of the Camassa-Holm equation

Vladimir Novikov

arxiv:0905.2219 v1 · 2009-05-13 · 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{KY6O7AFHTBFWLLSC7SADSD27ZT}

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	2026-07-04T15:42:34.594625Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

563cef80a7984b65ae42fc80390f5fccf4ad2a094bd39fba2945399f23288d11

Aliases

arxiv: 0905.2219 · arxiv_version: 0905.2219v1 · doi: 10.48550/arxiv.0905.2219 · pith_short_12: KY6O7AFHTBFW · pith_short_16: KY6O7AFHTBFWLLSC · pith_short_8: KY6O7AFH

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/KY6O7AFHTBFWLLSC7SADSD27ZT \
  | 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: 563cef80a7984b65ae42fc80390f5fccf4ad2a094bd39fba2945399f23288d11

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a8ef014d3407ef3e38d014adce6ceecc5c7dd00059b3e2e1d31cadc0ab312be4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "nlin.SI",
    "submitted_at": "2009-05-13T23:22:10Z",
    "title_canon_sha256": "ec6c4c084ec3a23c47e5abed6cb2f815ae69cdf6748a7098f5c0bb0be7f6caa3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0905.2219",
    "kind": "arxiv",
    "version": 1
  }
}