Pith Number

pith:QFQOM5C2

pith:2015:QFQOM5C2TK5TOSNPJ4OFWZ6QOX

not attested not anchored not stored refs pending

On Implicator Groupoids

Hanamantagouda P. Sankappanavar, Juan M. Cornejo

arxiv:1509.03774 v2 · 2015-09-12 · math.LO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QFQOM5C2TK5TOSNPJ4OFWZ6QOX}

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	2026-05-18T01:12:40.489612Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8160e6745a9abb3749af4f1c5b67d075ce628e55df36d7a4a5090c7d98867c8e

Aliases

arxiv: 1509.03774 · arxiv_version: 1509.03774v2 · doi: 10.48550/arxiv.1509.03774 · pith_short_12: QFQOM5C2TK5T · pith_short_16: QFQOM5C2TK5TOSNP · pith_short_8: QFQOM5C2

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/QFQOM5C2TK5TOSNPJ4OFWZ6QOX \
  | 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: 8160e6745a9abb3749af4f1c5b67d075ce628e55df36d7a4a5090c7d98867c8e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "df4d800158dbdba30ff54da50fdbca6c5bbdbd3453031224b6269b95372d6374",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2015-09-12T20:01:24Z",
    "title_canon_sha256": "c2b6fbefe2a2f4a1674c9ae9ae367588030e2db6e4ab0c7e33deb47b9b61add8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1509.03774",
    "kind": "arxiv",
    "version": 2
  }
}