Pith Number

pith:CRUSTQQJ

pith:2012:CRUSTQQJ3AW7IAPSLNSJ72UEYB

not attested not anchored not stored refs pending

Cohomologies of certain orbifolds

Daniele Angella

arxiv:1211.2561 v1 · 2012-11-12 · 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{CRUSTQQJ3AW7IAPSLNSJ72UEYB}

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	2026-05-18T03:22:18.664415Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

146929c209d82df401f25b649fea84c0606b71c3380767513350b3836b3e882f

Aliases

arxiv: 1211.2561 · arxiv_version: 1211.2561v1 · doi: 10.48550/arxiv.1211.2561 · pith_short_12: CRUSTQQJ3AW7 · pith_short_16: CRUSTQQJ3AW7IAPS · pith_short_8: CRUSTQQJ

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/CRUSTQQJ3AW7IAPSLNSJ72UEYB \
  | 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: 146929c209d82df401f25b649fea84c0606b71c3380767513350b3836b3e882f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a03210de4e6704c102578c3a9bc86a6f280fe0c7102ad72aa7f036623bcdb7fd",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2012-11-12T10:56:00Z",
    "title_canon_sha256": "3af2914400caf8a053286e0a4b6dfbf4adfb6540ab7868fe54415eeef0159fb4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1211.2561",
    "kind": "arxiv",
    "version": 1
  }
}