Pith Number

pith:NQL7JR6Z

pith:1997:NQL7JR6ZUGHNHQBJKDYPAIRKMY

not attested not anchored not stored refs pending

On the geometry of point-expansions for certain class of differential equations of the second order

O. N. Mikhailov, R. A. Sharipov

arxiv:solv-int/9712001 v1 · 1997-12-01 · 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{NQL7JR6ZUGHNHQBJKDYPAIRKMY}

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	2026-05-18T01:04:59.959033Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6c17f4c7d9a18ed3c02950f0f0222a66357c57fe9fa9725b203003f3756a6a58

Aliases

arxiv: solv-int/9712001 · arxiv_version: solv-int/9712001v1 · doi: 10.48550/arxiv.solv-int/9712001 · pith_short_12: NQL7JR6ZUGHN · pith_short_16: NQL7JR6ZUGHNHQBJ · pith_short_8: NQL7JR6Z

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/NQL7JR6ZUGHNHQBJKDYPAIRKMY \
  | 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: 6c17f4c7d9a18ed3c02950f0f0222a66357c57fe9fa9725b203003f3756a6a58

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "854336011e3fb4b12a414cb75583a628b26f5839e5ca7df3e315448c887e7d88",
    "cross_cats_sorted": [
      "nlin.SI"
    ],
    "license": "",
    "primary_cat": "solv-int",
    "submitted_at": "1997-12-01T08:03:25Z",
    "title_canon_sha256": "a0200e11d608656069b0fbd026f7a89d720b4523f401374185dedb8c39ad8f84"
  },
  "schema_version": "1.0",
  "source": {
    "id": "solv-int/9712001",
    "kind": "arxiv",
    "version": 1
  }
}