Pith Number

pith:K3DEKW6Q

pith:2008:K3DEKW6QHVMNCVF3ISUE2BZVIK

not attested not anchored not stored refs pending

The realization problem for von Neumann regular rings

Pere Ara

arxiv:0802.1872 v2 · 2008-02-13 · 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{K3DEKW6QHVMNCVF3ISUE2BZVIK}

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	2026-05-18T02:20:50.261002Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

56c6455bd03d58d154bb44a84d073542aa642060a98be3c713772ab6252c931c

Aliases

arxiv: 0802.1872 · arxiv_version: 0802.1872v2 · doi: 10.48550/arxiv.0802.1872 · pith_short_12: K3DEKW6QHVMN · pith_short_16: K3DEKW6QHVMNCVF3 · pith_short_8: K3DEKW6Q

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/K3DEKW6QHVMNCVF3ISUE2BZVIK \
  | 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: 56c6455bd03d58d154bb44a84d073542aa642060a98be3c713772ab6252c931c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ff6ccf6ef8f43183ac57ebc1418e1b6e88d1fdbb9381672523b46f150b770312",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.RA",
    "submitted_at": "2008-02-13T17:33:58Z",
    "title_canon_sha256": "b21e73c3c305a68e28d335260672c0a498c372c21e950bd9d6f6c76ccc1d6897"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0802.1872",
    "kind": "arxiv",
    "version": 2
  }
}