Pith Number

pith:FVCSKTTO

pith:2015:FVCSKTTOSTCUBBYDNBWR7G75AN

not attested not anchored not stored refs pending

Hochschild homology and trivial extensions

Dag Oskar Madsen, Petter Andreas Bergh

arxiv:1509.09039 v1 · 2015-09-30 · math.RA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FVCSKTTOSTCUBBYDNBWR7G75AN}

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	2026-05-18T01:31:29.272105Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2d45254e6e94c5408703686d1f9bfd036a039443f116873c7ec20d1f4534ebc2

Aliases

arxiv: 1509.09039 · arxiv_version: 1509.09039v1 · doi: 10.48550/arxiv.1509.09039 · pith_short_12: FVCSKTTOSTCU · pith_short_16: FVCSKTTOSTCUBBYD · pith_short_8: FVCSKTTO

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/FVCSKTTOSTCUBBYDNBWR7G75AN \
  | 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: 2d45254e6e94c5408703686d1f9bfd036a039443f116873c7ec20d1f4534ebc2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7d1a9d5fcf33663af5a71edfbecee3e9713999cd9f4bb0b78bdb48254d237552",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.RA",
    "submitted_at": "2015-09-30T07:37:54Z",
    "title_canon_sha256": "6138d76cfce7f1ac48b63f4069c885fb51a10b33f4a9a7555fcf3bcd710b1675"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1509.09039",
    "kind": "arxiv",
    "version": 1
  }
}