Pith Number

pith:WJTH2JYG

pith:2019:WJTH2JYGYAWUO74ZDCYQFQXK7L

not attested not anchored not stored refs pending

Autonomous first order differential equations

Jaap Top, Marc Paul Noordman, Marius van der Put

arxiv:1904.08152 v1 · 2019-04-17 · math.AG · math.CA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WJTH2JYGYAWUO74ZDCYQFQXK7L}

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	2026-05-17T23:48:18.608359Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b2667d2706c02d477f9918b102c2eafaf4194813c16642d3f00d143bdb38b4eb

Aliases

arxiv: 1904.08152 · arxiv_version: 1904.08152v1 · doi: 10.48550/arxiv.1904.08152 · pith_short_12: WJTH2JYGYAWU · pith_short_16: WJTH2JYGYAWUO74Z · pith_short_8: WJTH2JYG

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/WJTH2JYGYAWUO74ZDCYQFQXK7L \
  | 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: b2667d2706c02d477f9918b102c2eafaf4194813c16642d3f00d143bdb38b4eb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "aad234dc3e0508b39b7049f446b55fd9e37920fd626629de92c82083fef44f13",
    "cross_cats_sorted": [
      "math.CA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2019-04-17T09:26:47Z",
    "title_canon_sha256": "c5e43ec99ef5daca86047bb50c15025660dc01871a2439a7d259abfb7a970008"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.08152",
    "kind": "arxiv",
    "version": 1
  }
}