Pith Number

pith:BJ5HRJ5W

pith:2009:BJ5HRJ5WW3DAPJ5E74UBDSNYHO

not attested not anchored not stored refs pending

The Kundu--Eckhaus equation and its discretizations

Christian Scimiterna, Decio Levi

arxiv:0904.4844 v1 · 2009-04-30 · nlin.SI · 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{BJ5HRJ5WW3DAPJ5E74UBDSNYHO}

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	2026-05-18T02:13:48.776485Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0a7a78a7b6b6c607a7a4ff2811c9b83ba65a3131f80306811064bc2d225521ce

Aliases

arxiv: 0904.4844 · arxiv_version: 0904.4844v1 · doi: 10.48550/arxiv.0904.4844 · pith_short_12: BJ5HRJ5WW3DA · pith_short_16: BJ5HRJ5WW3DAPJ5E · pith_short_8: BJ5HRJ5W

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/BJ5HRJ5WW3DAPJ5E74UBDSNYHO \
  | 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: 0a7a78a7b6b6c607a7a4ff2811c9b83ba65a3131f80306811064bc2d225521ce

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7d554ebbe1d447331c707bd558a76e8aaa737af187d9d9ceba4f1a2ddc44b733",
    "cross_cats_sorted": [
      "nlin.PS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "nlin.SI",
    "submitted_at": "2009-04-30T14:07:37Z",
    "title_canon_sha256": "117239b265aa48e0253ad1be1954332f803f4339826c8dc350eb656303465ad9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.4844",
    "kind": "arxiv",
    "version": 1
  }
}