Pith Number

pith:Y24B2ETI

pith:2018:Y24B2ETI24EG44ZISNOASHRR3N

not attested not anchored not stored refs pending

The Hochschild cohomology ring of a global quotient orbifold

Cris Negron, Pavel Etingof, Pieter Belmans, Travis Schedler

arxiv:1809.08715 v2 · 2018-09-24 · math.AG · math.KT · math.RT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{Y24B2ETI24EG44ZISNOASHRR3N}

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	2026-05-17T23:58:30.483075Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c6b81d1268d7086e7328935c091e31db44a677eac98bc0bc50846d346804d0e8

Aliases

arxiv: 1809.08715 · arxiv_version: 1809.08715v2 · doi: 10.48550/arxiv.1809.08715 · pith_short_12: Y24B2ETI24EG · pith_short_16: Y24B2ETI24EG44ZI · pith_short_8: Y24B2ETI

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/Y24B2ETI24EG44ZISNOASHRR3N \
  | 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: c6b81d1268d7086e7328935c091e31db44a677eac98bc0bc50846d346804d0e8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "113c1d5cb3da73d5499a5ec1c12da84f8a03f232be529ee62b776671883f39de",
    "cross_cats_sorted": [
      "math.KT",
      "math.RT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2018-09-24T01:17:40Z",
    "title_canon_sha256": "8ea53d7e00302f7a97697ed64e3e5deefbe2a4e64947b0076c2e44712f18735a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.08715",
    "kind": "arxiv",
    "version": 2
  }
}