Pith Number

pith:Q4QAP6GM

pith:2005:Q4QAP6GMQY6DKX5KLLUE3ZCDJ7

not attested not anchored not stored refs pending

Total reality of conormal bundles of hypersurfaces in almost complex manifolds

Andrea Spiro

arxiv:math/0502291 v1 · 2005-02-14 · 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{Q4QAP6GMQY6DKX5KLLUE3ZCDJ7}

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	2026-05-18T01:38:26.933257Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

872007f8cc863c355faa5ae84de4434ff154c0ff062d7a63ed3510411c6f646f

Aliases

arxiv: math/0502291 · arxiv_version: math/0502291v1 · doi: 10.48550/arxiv.math/0502291 · pith_short_12: Q4QAP6GMQY6D · pith_short_16: Q4QAP6GMQY6DKX5K · pith_short_8: Q4QAP6GM

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/Q4QAP6GMQY6DKX5KLLUE3ZCDJ7 \
  | 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: 872007f8cc863c355faa5ae84de4434ff154c0ff062d7a63ed3510411c6f646f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "19c8424434dde548c0618be7cb883a1468320e4c9183b2489a6cd532b3bb73a1",
    "cross_cats_sorted": [
      "math.CV"
    ],
    "license": "",
    "primary_cat": "math.DG",
    "submitted_at": "2005-02-14T16:47:21Z",
    "title_canon_sha256": "17182a32f55c8b7884d916fb77cbd1d5a8ca513f1badebcd2b23f12fd5224ce0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0502291",
    "kind": "arxiv",
    "version": 1
  }
}