Pith Number

pith:XEPL2WKD

pith:2011:XEPL2WKD547S2PVG2PVGA7SRX6

not attested not anchored not stored refs pending

Cartan equivalence problem for third order differential operators

Mehdi Nadjafikhah, Rohollah Bakhshandeh-Chamazkoti

arxiv:1101.3208 v3 · 2011-01-17 · 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{XEPL2WKD547S2PVG2PVGA7SRX6}

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	2026-05-18T04:13:39.314172Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b91ebd5943ef3f2d3ea6d3ea607e51bf9f1813f5871471c7cb7b463689d0a619

Aliases

arxiv: 1101.3208 · arxiv_version: 1101.3208v3 · doi: 10.48550/arxiv.1101.3208 · pith_short_12: XEPL2WKD547S · pith_short_16: XEPL2WKD547S2PVG · pith_short_8: XEPL2WKD

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/XEPL2WKD547S2PVG2PVGA7SRX6 \
  | 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: b91ebd5943ef3f2d3ea6d3ea607e51bf9f1813f5871471c7cb7b463689d0a619

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "07781e608d7216e8a80a284780ba7a901f743d904ae2120e72b17ff4386ae066",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/3.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2011-01-17T13:46:30Z",
    "title_canon_sha256": "da909b2bbd96197c1cbe3296bdce94c68df89266d8e3701637a4e6c8c86c7abb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1101.3208",
    "kind": "arxiv",
    "version": 3
  }
}