Pith Number

pith:ORCEHZAD

pith:2018:ORCEHZADU7P2VQRDFIB5MGS57H

not attested not anchored not stored refs pending

Geometry and dynamics of Engel structures

Yoshihiko Mitsumatsu

arxiv:1804.09471 v1 · 2018-04-25 · math.DG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ORCEHZADU7P2VQRDFIB5MGS57H}

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	2026-05-18T00:17:31.702610Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

744443e403a7dfaac2232a03d61a5df9f3bd9628e707145568ea0e87b0c016f3

Aliases

arxiv: 1804.09471 · arxiv_version: 1804.09471v1 · doi: 10.48550/arxiv.1804.09471 · pith_short_12: ORCEHZADU7P2 · pith_short_16: ORCEHZADU7P2VQRD · pith_short_8: ORCEHZAD

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/ORCEHZADU7P2VQRDFIB5MGS57H \
  | 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: 744443e403a7dfaac2232a03d61a5df9f3bd9628e707145568ea0e87b0c016f3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8780a75210d0b5d61b9e22d556bb717c9d3b8666b05285b9ec9ffb5cd3b73b00",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2018-04-25T10:36:31Z",
    "title_canon_sha256": "3bc2f816ef2ff633aac1a20b895280d96775c559d3e36ed51de896c593fc008d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.09471",
    "kind": "arxiv",
    "version": 1
  }
}