Pith Number

pith:I7SCOY5I

pith:2009:I7SCOY5IV7E6CKVUFCHQOOEL5J

not attested not anchored not stored refs pending

n-representation-finite algebras and twisted fractionally Calabi-Yau algebras

Martin Herschend, Osamu Iyama

arxiv:0908.3510 v2 · 2009-08-25 · 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{I7SCOY5IV7E6CKVUFCHQOOEL5J}

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	2026-05-18T02:58:02.866886Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

47e42763a8afc9e12ab4288f07388bea531b29205a2b4a28c1fa5e4d653e9a60

Aliases

arxiv: 0908.3510 · arxiv_version: 0908.3510v2 · doi: 10.48550/arxiv.0908.3510 · pith_short_12: I7SCOY5IV7E6 · pith_short_16: I7SCOY5IV7E6CKVU · pith_short_8: I7SCOY5I

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/I7SCOY5IV7E6CKVUFCHQOOEL5J \
  | 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: 47e42763a8afc9e12ab4288f07388bea531b29205a2b4a28c1fa5e4d653e9a60

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "80c74848855cdf2f064738fc5f3c5567af317d8d7978e98386ef6162e3b4fced",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.RT",
    "submitted_at": "2009-08-25T14:52:16Z",
    "title_canon_sha256": "79d411ee650a69de0ed3d33e5428f96feb977af5500b1d3313672d762f24dcf9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0908.3510",
    "kind": "arxiv",
    "version": 2
  }
}