Pith Number

pith:BW4TZRG4

pith:2000:BW4TZRG4TPO6JKMXMA7RNE4LEW

not attested not anchored not stored refs pending

A system of four ODEs: the singularity analysis

Sergei Yu. Sakovich

arxiv:nlin/0003039 v3 · 2000-03-17 · nlin.SI · math-ph · math.CA · math.DS · math.MP

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BW4TZRG4TPO6JKMXMA7RNE4LEW}

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	2026-05-18T01:05:22.273801Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0db93cc4dc9bdde4a997603f16938b2591ced85d869c6be4bfe8fe03927ad668

Aliases

arxiv: nlin/0003039 · arxiv_version: nlin/0003039v3 · doi: 10.48550/arxiv.nlin/0003039 · pith_short_12: BW4TZRG4TPO6 · pith_short_16: BW4TZRG4TPO6JKMX · pith_short_8: BW4TZRG4

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/BW4TZRG4TPO6JKMXMA7RNE4LEW \
  | 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: 0db93cc4dc9bdde4a997603f16938b2591ced85d869c6be4bfe8fe03927ad668

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ca8c77be651ff2c969ea3d019a8f0373c017d9238417e1e9856f71a9ed43f1f8",
    "cross_cats_sorted": [
      "math-ph",
      "math.CA",
      "math.DS",
      "math.MP"
    ],
    "license": "",
    "primary_cat": "nlin.SI",
    "submitted_at": "2000-03-17T11:50:22Z",
    "title_canon_sha256": "3757375153228cd097cd7044e1a5745044302d86ddd73965f3523277aa653b76"
  },
  "schema_version": "1.0",
  "source": {
    "id": "nlin/0003039",
    "kind": "arxiv",
    "version": 3
  }
}