Pith Number

pith:UA4MEO2V

pith:2021:UA4MEO2VBQOLCGUWIEEDXO5XIO

not attested not anchored not stored refs pending

Linear integral equations and two-dimensional Toda systems

Wei Fu, Yue Yin

arxiv:2104.06123 v2 · 2021-04-13 · 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{UA4MEO2VBQOLCGUWIEEDXO5XIO}

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	2026-07-05T02:58:41.367778Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a038c23b550c1cb11a9641083bbbb743a60a3a51fd7013046f422821f8ad96d2

Aliases

arxiv: 2104.06123 · arxiv_version: 2104.06123v2 · doi: 10.48550/arxiv.2104.06123 · pith_short_12: UA4MEO2VBQOL · pith_short_16: UA4MEO2VBQOLCGUW · pith_short_8: UA4MEO2V

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/UA4MEO2VBQOLCGUWIEEDXO5XIO \
  | 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: a038c23b550c1cb11a9641083bbbb743a60a3a51fd7013046f422821f8ad96d2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "72da3bb5a58805a174d4e22af037ef9074737816b9d84187b7d3b8747d1aa140",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "nlin.SI",
    "submitted_at": "2021-04-13T11:55:14Z",
    "title_canon_sha256": "23624b56d5bc0e76bdec063cee7b4d994e8238ecc239eb206c90033a2f76c1ec"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2104.06123",
    "kind": "arxiv",
    "version": 2
  }
}