Pith Number

pith:6UD6U7IX

pith:2019:6UD6U7IXNGUYICWVEOGLFHT3I6

not attested not anchored not stored refs pending

Adapted complex and involutive structures

L\'aszl\'o Lempert

arxiv:1901.03388 v1 · 2019-01-10 · math.DG · math.CV

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6UD6U7IXNGUYICWVEOGLFHT3I6}

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	2026-05-17T23:56:31.372661Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f507ea7d1769a9840ad5238cb29e7b478e26741d169341d0979610047ac7c542

Aliases

arxiv: 1901.03388 · arxiv_version: 1901.03388v1 · doi: 10.48550/arxiv.1901.03388 · pith_short_12: 6UD6U7IXNGUY · pith_short_16: 6UD6U7IXNGUYICWV · pith_short_8: 6UD6U7IX

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/6UD6U7IXNGUYICWVEOGLFHT3I6 \
  | 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: f507ea7d1769a9840ad5238cb29e7b478e26741d169341d0979610047ac7c542

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "79646bf6b983ffba8386eaf89acda491517777d4397b5f5dc60b7f50ac8831ee",
    "cross_cats_sorted": [
      "math.CV"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2019-01-10T20:56:08Z",
    "title_canon_sha256": "83f914c54d377e88d7892ef97431cb61ebf0449143d094b75e37cf320ae72148"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.03388",
    "kind": "arxiv",
    "version": 1
  }
}