Pith Number

pith:FUOC2LSM

pith:2004:FUOC2LSM3LE7K5VD6APDMEUGJH

not attested not anchored not stored refs pending

Contractible subgraphs and Morita equivalence of graph C*-algebras

Daniel Gow, Tyrone Crisp

arxiv:math/0404542 v1 · 2004-04-29 · math.OA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FUOC2LSM3LE7K5VD6APDMEUGJH}

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	2026-05-18T03:37:19.408247Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2d1c2d2e4cdac9f576a3f01e36128649ecc1239fe666560669f7c6200a449a85

Aliases

arxiv: math/0404542 · arxiv_version: math/0404542v1 · doi: 10.48550/arxiv.math/0404542 · pith_short_12: FUOC2LSM3LE7 · pith_short_16: FUOC2LSM3LE7K5VD · pith_short_8: FUOC2LSM

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/FUOC2LSM3LE7K5VD6APDMEUGJH \
  | 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: 2d1c2d2e4cdac9f576a3f01e36128649ecc1239fe666560669f7c6200a449a85

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7a185cf29b90c5e207b1cc1ee0b3e38cafd987ba1f70c746a5958d11d11366f0",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "math.OA",
    "submitted_at": "2004-04-29T23:57:48Z",
    "title_canon_sha256": "c1e98d311fcbfadd52852c9ab87de4684fa952b0981fef3b103764d86a988061"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0404542",
    "kind": "arxiv",
    "version": 1
  }
}