Pith Number

pith:JOSTBOAO

pith:2012:JOSTBOAOJXBIGZNJ4P2SE6OJ5P

not attested not anchored not stored refs pending

Large free sets in universal algebras

Artur Bartoszewicz, Szymon G{\l}ab, Taras Banakh

arxiv:1209.6444 v3 · 2012-09-28 · math.LO · 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{JOSTBOAOJXBIGZNJ4P2SE6OJ5P}

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	2026-05-18T02:32:14.613735Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4ba530b80e4dc28365a9e3f52279c9ebc531c6a2c7ef2ae802a8484cadef3483

Aliases

arxiv: 1209.6444 · arxiv_version: 1209.6444v3 · doi: 10.48550/arxiv.1209.6444 · pith_short_12: JOSTBOAOJXBI · pith_short_16: JOSTBOAOJXBIGZNJ · pith_short_8: JOSTBOAO

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/JOSTBOAOJXBIGZNJ4P2SE6OJ5P \
  | 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: 4ba530b80e4dc28365a9e3f52279c9ebc531c6a2c7ef2ae802a8484cadef3483

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3f3169343a797d6075f31449194cc34e12cd0e7ea7401bc132ef9ea085986336",
    "cross_cats_sorted": [
      "math.RA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2012-09-28T08:01:09Z",
    "title_canon_sha256": "bc83949e8d061102177be91e0bbdbc41f905c6d1169bc26fd505a9a22d24a6d7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1209.6444",
    "kind": "arxiv",
    "version": 3
  }
}