Pith Number

pith:4FIFK7SO

pith:2005:4FIFK7SOHCYVNTXYLKPSBJN3TR

not attested not anchored not stored refs pending

Hochschild cohomology of truncated quiver algebras

Wenfeng Jiang, Yang Han, Yunge Xu

arxiv:math/0509202 v1 · 2005-09-09 · math.RA · 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{4FIFK7SOHCYVNTXYLKPSBJN3TR}

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	2026-07-04T14:40:22.259819Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e150557e4e38b156cef85a9f20a5bb9c7c21182125dbc6d650cb27a868b19f59

Aliases

arxiv: math/0509202 · arxiv_version: math/0509202v1 · doi: 10.48550/arxiv.math/0509202 · pith_short_12: 4FIFK7SOHCYV · pith_short_16: 4FIFK7SOHCYVNTXY · pith_short_8: 4FIFK7SO

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/4FIFK7SOHCYVNTXYLKPSBJN3TR \
  | 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: e150557e4e38b156cef85a9f20a5bb9c7c21182125dbc6d650cb27a868b19f59

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "926fc63e7ee4c6c072efe03c9f5f510781d1f6e407d9f03af5e500468df7c785",
    "cross_cats_sorted": [
      "math.RT"
    ],
    "license": "",
    "primary_cat": "math.RA",
    "submitted_at": "2005-09-09T04:39:03Z",
    "title_canon_sha256": "fef2a068c455863e45f95a3324c04434f3f19dc2c03f036b909424671fa66a1e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0509202",
    "kind": "arxiv",
    "version": 1
  }
}