Pith Number

pith:47A7RGGF

pith:2008:47A7RGGF6IIWWUB7OO7CZ5NWLI

not attested not anchored not stored refs pending

Modified KdV hierarchy : Lax pair representation and bi-Hamiltonian structure

Amitava Choudhuri, B. Talukdar, U. Das

arxiv:0801.1763 v2 · 2008-01-11 · 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{47A7RGGF6IIWWUB7OO7CZ5NWLI}

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	2026-05-18T02:16:02.021204Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e7c1f898c5f2116b503f73be2cf5b65a0631a28bd41e229eb7f27ef4d1eb8476

Aliases

arxiv: 0801.1763 · arxiv_version: 0801.1763v2 · doi: 10.48550/arxiv.0801.1763 · pith_short_12: 47A7RGGF6IIW · pith_short_16: 47A7RGGF6IIWWUB7 · pith_short_8: 47A7RGGF

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/47A7RGGF6IIWWUB7OO7CZ5NWLI \
  | 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: e7c1f898c5f2116b503f73be2cf5b65a0631a28bd41e229eb7f27ef4d1eb8476

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2a804f874090f9a86602b82c9cd98a9141c1f381a41bd732306b363203ea594d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "nlin.SI",
    "submitted_at": "2008-01-11T12:14:25Z",
    "title_canon_sha256": "64952961e152f41944ea2210c197ca8d96008031341a82f0c172bb0835b7273c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0801.1763",
    "kind": "arxiv",
    "version": 2
  }
}