Pith Number

pith:QPTBP3ZO

pith:2007:QPTBP3ZO4PIVXQ2DWINXV22JSX

not attested not anchored not stored refs pending

New reductions of integrable matrix PDEs: $Sp(m)$-invariant systems

Takayuki Tsuchida

arxiv:0712.4373 v5 · 2007-12-28 · nlin.SI · math-ph · math.AP · math.MP · nlin.PS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QPTBP3ZO4PIVXQ2DWINXV22JSX}

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	2026-05-18T04:05:46.286919Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

83e617ef2ee3d15bc343b21b7aeb4995dcb23cc84897422151b43587742adb71

Aliases

arxiv: 0712.4373 · arxiv_version: 0712.4373v5 · doi: 10.48550/arxiv.0712.4373 · pith_short_12: QPTBP3ZO4PIV · pith_short_16: QPTBP3ZO4PIVXQ2D · pith_short_8: QPTBP3ZO

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/QPTBP3ZO4PIVXQ2DWINXV22JSX \
  | 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: 83e617ef2ee3d15bc343b21b7aeb4995dcb23cc84897422151b43587742adb71

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "64c7b97fa4993ce9be3aeaf91fdfccda6db348eec35e5acf18fc47c2f4fd1572",
    "cross_cats_sorted": [
      "math-ph",
      "math.AP",
      "math.MP",
      "nlin.PS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "nlin.SI",
    "submitted_at": "2007-12-28T17:10:07Z",
    "title_canon_sha256": "cdb4d495f8f27447de621f85ed3b204dafe41d85c5d44d35b081990ccc234351"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0712.4373",
    "kind": "arxiv",
    "version": 5
  }
}