Pith Number

pith:FLNBHBUF

pith:2012:FLNBHBUFVDQ2UA5S4LKM6PEJJG

not attested not anchored not stored refs pending

Orbifold groups, quasi-projectivity and covers

Daniel Matei, Enrique Artal Bartolo, Jose Ignacio Cogolludo-Agustin

arxiv:1203.1645 v1 · 2012-03-07 · math.AG · math.GT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FLNBHBUFVDQ2UA5S4LKM6PEJJG}

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	2026-05-18T04:00:37.395377Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2ada138685a8e1aa03b2e2d4cf3c8949a35f4e410d0a071516f2262d94dc7115

Aliases

arxiv: 1203.1645 · arxiv_version: 1203.1645v1 · doi: 10.48550/arxiv.1203.1645 · pith_short_12: FLNBHBUFVDQ2 · pith_short_16: FLNBHBUFVDQ2UA5S · pith_short_8: FLNBHBUF

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/FLNBHBUFVDQ2UA5S4LKM6PEJJG \
  | 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: 2ada138685a8e1aa03b2e2d4cf3c8949a35f4e410d0a071516f2262d94dc7115

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b191d367d14757a32e56e96014bd275fc9e595797f256c5639e19a7ed1d22ace",
    "cross_cats_sorted": [
      "math.GT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2012-03-07T22:04:16Z",
    "title_canon_sha256": "89887914ebf553b12a4d174e22e431cfe0b83835703f7854c45446f217e61e86"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.1645",
    "kind": "arxiv",
    "version": 1
  }
}