Pith Number

pith:5X75ELJC

pith:1999:5X75ELJC66XYFT6GHPUZK7EHSE

not attested not anchored not stored refs pending

Integrable semi-discretization of the coupled nonlinear Schr\"{o}dinger equations

H. Ujino, M. Wadati (University of Tokyo), T. Tsuchida

arxiv:solv-int/9903013 v1 · 1999-03-18 · solv-int · 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{5X75ELJC66XYFT6GHPUZK7EHSE}

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	2026-07-04T14:59:05.856256Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

edffd22d22f7af82cfc63be9957c87913a73c4986845f971ebe7c0333138daf5

Aliases

arxiv: solv-int/9903013 · arxiv_version: solv-int/9903013v1 · doi: 10.48550/arxiv.solv-int/9903013 · pith_short_12: 5X75ELJC66XY · pith_short_16: 5X75ELJC66XYFT6G · pith_short_8: 5X75ELJC

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/5X75ELJC66XYFT6GHPUZK7EHSE \
  | 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: edffd22d22f7af82cfc63be9957c87913a73c4986845f971ebe7c0333138daf5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "39f533fec4c1f17998981d60c3979e9bd4aa33a2078e39889a9209fca6d89161",
    "cross_cats_sorted": [
      "nlin.SI"
    ],
    "license": "",
    "primary_cat": "solv-int",
    "submitted_at": "1999-03-18T16:39:08Z",
    "title_canon_sha256": "e3a90f671d8af66b1d8f9439428b8abbe573a07a674c3c6bfde5f869133c0b56"
  },
  "schema_version": "1.0",
  "source": {
    "id": "solv-int/9903013",
    "kind": "arxiv",
    "version": 1
  }
}