Pith Number

pith:7GXGX4JL

pith:1999:7GXGX4JLKD6Q55WUX7LXDKWCHS

not attested not anchored not stored refs pending

Families of quai-bi-Hamiltonian systems and separability

(2) City University of Hong Kong, Beijing, China, China), Wen-Xiu Ma (2) ((1)Tsinghua University, Yunbo Zeng (1)

arxiv:solv-int/9906005 v1 · 1999-06-10 · 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{7GXGX4JLKD6Q55WUX7LXDKWCHS}

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	2026-05-18T01:37:51.803012Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f9ae6bf12b50fd0ef6d4bfd771aac23cbc2db413d02757783eb0f8f0e43d4a16

Aliases

arxiv: solv-int/9906005 · arxiv_version: solv-int/9906005v1 · doi: 10.48550/arxiv.solv-int/9906005 · pith_short_12: 7GXGX4JLKD6Q · pith_short_16: 7GXGX4JLKD6Q55WU · pith_short_8: 7GXGX4JL

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/7GXGX4JLKD6Q55WUX7LXDKWCHS \
  | 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: f9ae6bf12b50fd0ef6d4bfd771aac23cbc2db413d02757783eb0f8f0e43d4a16

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d42b2d0750b4dbd95275f176535c209485dc4f1b540d96e55a25d0589f18f101",
    "cross_cats_sorted": [
      "nlin.SI"
    ],
    "license": "",
    "primary_cat": "solv-int",
    "submitted_at": "1999-06-10T02:48:21Z",
    "title_canon_sha256": "8a09271fa0ab9f2fc29ecbabe7151506532162a1c430ff232444b4665dd34415"
  },
  "schema_version": "1.0",
  "source": {
    "id": "solv-int/9906005",
    "kind": "arxiv",
    "version": 1
  }
}