Pith Number

pith:Z2IYL65U

pith:2017:Z2IYL65URHQ6ZPOXQ4E4XPPSSB

not attested not anchored not stored refs pending

Convergence of the Chern-Moser-Beloshapka normal forms

Bernhard Lamel, Laurent Stolovitch (JAD)

arxiv:1705.04067 v1 · 2017-05-11 · math.CV · math.DG · math.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{Z2IYL65URHQ6ZPOXQ4E4XPPSSB}

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	2026-05-18T00:44:41.488208Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ce9185fbb489e1ecbdd78709cbbdf29057c49e9961d9141463d9008544ad7fb0

Aliases

arxiv: 1705.04067 · arxiv_version: 1705.04067v1 · doi: 10.48550/arxiv.1705.04067 · pith_short_12: Z2IYL65URHQ6 · pith_short_16: Z2IYL65URHQ6ZPOX · pith_short_8: Z2IYL65U

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/Z2IYL65URHQ6ZPOXQ4E4XPPSSB \
  | 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: ce9185fbb489e1ecbdd78709cbbdf29057c49e9961d9141463d9008544ad7fb0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "97548bb986113bedccd6376bca2eef31acb37152512f7351b79066490b3a0b48",
    "cross_cats_sorted": [
      "math.DG",
      "math.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CV",
    "submitted_at": "2017-05-11T08:27:19Z",
    "title_canon_sha256": "91f8a904bcb968955160e359cf2defe59199267b055cdf8aaa1c7d33c93fd3ec"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1705.04067",
    "kind": "arxiv",
    "version": 1
  }
}