Pith Number

pith:7NMIQLMZ

pith:2012:7NMIQLMZVWHHSABSGUUGKDGS5N

not attested not anchored not stored refs pending

An integrable multicomponent quad equation and its Lagrangian formulation

F. W. Nijhoff, J. Atkinson, S. B. Lobb

arxiv:1204.5521 v1 · 2012-04-25 · 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{7NMIQLMZVWHHSABSGUUGKDGS5N}

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	2026-05-18T01:57:46.415960Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fb58882d99ad8e7900323528650cd2eb629637427e3270fcb55c34b8d83c3a1f

Aliases

arxiv: 1204.5521 · arxiv_version: 1204.5521v1 · doi: 10.48550/arxiv.1204.5521 · pith_short_12: 7NMIQLMZVWHH · pith_short_16: 7NMIQLMZVWHHSABS · pith_short_8: 7NMIQLMZ

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/7NMIQLMZVWHHSABSGUUGKDGS5N \
  | 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: fb58882d99ad8e7900323528650cd2eb629637427e3270fcb55c34b8d83c3a1f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e79e1f2b5dd9aad96330a78a02885ca419b4a6fe1023fba1c1a6c4ba85a30984",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "nlin.SI",
    "submitted_at": "2012-04-25T00:38:26Z",
    "title_canon_sha256": "822f413c1700cad7fd321dbb37544146fd02cf48f0c1dc9eb11c43dd3eaf0c2c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.5521",
    "kind": "arxiv",
    "version": 1
  }
}