Pith Number

pith:II54AVEF

pith:2009:II54AVEF37FN2ZS7NDA5WQWNF5

not attested not anchored not stored refs pending

Twistor Theory for CR quaternionic manifolds and related structures

L. Ornea, R. Pantilie, S. Marchiafava

arxiv:0905.1455 v6 · 2009-05-10 · 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{II54AVEF37FN2ZS7NDA5WQWNF5}

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	2026-05-18T04:19:22.413949Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

423bc05485dfcadd665f68c1db42cd2f6921aa427f1a17aa17f6975c6bc3edda

Aliases

arxiv: 0905.1455 · arxiv_version: 0905.1455v6 · doi: 10.48550/arxiv.0905.1455 · pith_short_12: II54AVEF37FN · pith_short_16: II54AVEF37FN2ZS7 · pith_short_8: II54AVEF

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/II54AVEF37FN2ZS7NDA5WQWNF5 \
  | 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: 423bc05485dfcadd665f68c1db42cd2f6921aa427f1a17aa17f6975c6bc3edda

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0286b6588ea484c1cf66e16d1b4e21e96063e2cf9007766e2e5ea6eba0c8850c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2009-05-10T08:11:52Z",
    "title_canon_sha256": "4e218c437aca07c1765681557ffdf0d29c4cf1d74a9a7d2396fe9b1874737edf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0905.1455",
    "kind": "arxiv",
    "version": 6
  }
}