Pith Number

pith:QYRPXFSG

pith:2011:QYRPXFSGHMD7B4YPZSNTV3R3JG

not attested not anchored not stored refs pending

C*-Rhapsody

Aleks Kleyn

arxiv:1104.5197 v2 · 2011-04-27 · 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{QYRPXFSGHMD7B4YPZSNTV3R3JG}

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	2026-05-18T04:21:29.704287Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8622fb96463b07f0f30fcc9b3aee3b49a51b9246b9d4a10ae3362aa2f3d1e710

Aliases

arxiv: 1104.5197 · arxiv_version: 1104.5197v2 · doi: 10.48550/arxiv.1104.5197 · pith_short_12: QYRPXFSGHMD7 · pith_short_16: QYRPXFSGHMD7B4YP · pith_short_8: QYRPXFSG

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/QYRPXFSGHMD7B4YPZSNTV3R3JG \
  | 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: 8622fb96463b07f0f30fcc9b3aee3b49a51b9246b9d4a10ae3362aa2f3d1e710

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b31b4eaba16c25e1e8f718468be5d6b8ed415136779bce99a50c836bb2658448",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.RA",
    "submitted_at": "2011-04-27T17:29:35Z",
    "title_canon_sha256": "d50a65ac9d9ecbb7498cab71990389bf5055bb4142b23aecbcde341f133427f0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1104.5197",
    "kind": "arxiv",
    "version": 2
  }
}