Pith Number

pith:S2HDH3DB

pith:2009:S2HDH3DB5BEC6FUQTDKFG5GODX

not attested not anchored not stored refs pending

Unitary representations of the fundamental group of Orbifolds

Amit Hogadi, Indranil Biswas

arxiv:0908.4037 v2 · 2009-08-27 · math.AG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{S2HDH3DB5BEC6FUQTDKFG5GODX}

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	2026-05-18T04:03:07.579327Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

968e33ec61e8482f169098d45374ce1dc158db1139bd7ff37abc2bc0486c035a

Aliases

arxiv: 0908.4037 · arxiv_version: 0908.4037v2 · doi: 10.48550/arxiv.0908.4037 · pith_short_12: S2HDH3DB5BEC · pith_short_16: S2HDH3DB5BEC6FUQ · pith_short_8: S2HDH3DB

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/S2HDH3DB5BEC6FUQTDKFG5GODX \
  | 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: 968e33ec61e8482f169098d45374ce1dc158db1139bd7ff37abc2bc0486c035a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "46f77f1058c5a35e57c25c1810a7314c5308154b7fb795bd1c4775b221064e80",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2009-08-27T16:07:32Z",
    "title_canon_sha256": "73702062a65fad4023632a2d28ce71862124bf1f49f01373f0b0741f89c12e7d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0908.4037",
    "kind": "arxiv",
    "version": 2
  }
}