Pith Number

pith:QEKRRCGC

pith:2012:QEKRRCGCU676KG4FLHYEEDSICI

not attested not anchored not stored refs pending

Topology of singular holomorphic foliations along a compact divisor

David Mar\'in, Jean-Fran\c{c}ois Mattei

arxiv:1206.2121 v1 · 2012-06-11 · 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{QEKRRCGCU676KG4FLHYEEDSICI}

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	2026-05-18T03:53:53.438838Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

81151888c2a7bfe51b8559f0420e48121aef3dc807266c454a3d86ad22528271

Aliases

arxiv: 1206.2121 · arxiv_version: 1206.2121v1 · doi: 10.48550/arxiv.1206.2121 · pith_short_12: QEKRRCGCU676 · pith_short_16: QEKRRCGCU676KG4F · pith_short_8: QEKRRCGC

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/QEKRRCGCU676KG4FLHYEEDSICI \
  | 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: 81151888c2a7bfe51b8559f0420e48121aef3dc807266c454a3d86ad22528271

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "54ad8b4e948e30369843afafa16ea7b650fda34da35e96a2fee7ea916fd85565",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DS",
    "submitted_at": "2012-06-11T07:59:02Z",
    "title_canon_sha256": "e3c2087e2b8d47733b64bf56ef4ce721e64343dbb136db4cf314d9bf5f0378d6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1206.2121",
    "kind": "arxiv",
    "version": 1
  }
}