Pith Number

pith:RIIZV5JG

pith:2012:RIIZV5JGALIRIT7EUTCKL4UZGY

not attested not anchored not stored refs pending

Purely infinite simple reduced C*-algebras of one-relator separated graphs

Pere Ara

arxiv:1203.2815 v2 · 2012-03-13 · 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{RIIZV5JGALIRIT7EUTCKL4UZGY}

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	2026-05-18T03:56:47.379123Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8a119af52602d1144fe4a4c4a5f299361bb396f1b09f9fa4e0f431b464337cab

Aliases

arxiv: 1203.2815 · arxiv_version: 1203.2815v2 · doi: 10.48550/arxiv.1203.2815 · pith_short_12: RIIZV5JGALIR · pith_short_16: RIIZV5JGALIRIT7E · pith_short_8: RIIZV5JG

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/RIIZV5JGALIRIT7EUTCKL4UZGY \
  | 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: 8a119af52602d1144fe4a4c4a5f299361bb396f1b09f9fa4e0f431b464337cab

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "71794f502f6c573a6d4b3539599e2471b0bb24e97792860a457a36859fb339db",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OA",
    "submitted_at": "2012-03-13T14:05:47Z",
    "title_canon_sha256": "f372f8ae31dc76a0941c1974dca8a2d9f9a9c8c006f72ab0585e3d6767ccb7c4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.2815",
    "kind": "arxiv",
    "version": 2
  }
}