Pith Number

pith:5TK5RCDS

pith:2010:5TK5RCDSDOQILIMMMNMVLRBG4M

not attested not anchored not stored refs pending

On the classification of scalar evolutionary integrable equations in $2+1$ dimensions

E.V. Ferapontov, V.S. Novikov

arxiv:1011.2145 v1 · 2010-11-09 · 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{5TK5RCDSDOQILIMMMNMVLRBG4M}

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	2026-05-18T02:04:49.708011Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ecd5d888721ba085a18c635955c426e32ace444ff37b61fe2b30d91839a0a94c

Aliases

arxiv: 1011.2145 · arxiv_version: 1011.2145v1 · doi: 10.48550/arxiv.1011.2145 · pith_short_12: 5TK5RCDSDOQI · pith_short_16: 5TK5RCDSDOQILIMM · pith_short_8: 5TK5RCDS

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/5TK5RCDSDOQILIMMMNMVLRBG4M \
  | 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: ecd5d888721ba085a18c635955c426e32ace444ff37b61fe2b30d91839a0a94c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "404be487ade4f82664aed08ea6f13e40432450c684ce64584964857e35040e4b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "nlin.SI",
    "submitted_at": "2010-11-09T16:46:23Z",
    "title_canon_sha256": "c8807bab42a16d3367db42a6799b7374c9ef5fb0d3ade1c9c9ce2e69afb7fc79"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1011.2145",
    "kind": "arxiv",
    "version": 1
  }
}