Pith Number

pith:QQRBKNO4

pith:2014:QQRBKNO47YCO3S74WXPKYNB7CI

not attested not anchored not stored refs pending

From algebra to logic: there and back again -- the story of a hierarchy

Pascal Weil (LaBRI)

arxiv:1406.1035 v1 · 2014-06-03 · cs.FL · cs.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{QQRBKNO47YCO3S74WXPKYNB7CI}

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	2026-05-18T02:50:30.477094Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

84221535dcfe04edcbfcb5deac343f12090a7ac53f9389cc77ba21dc314a2779

Aliases

arxiv: 1406.1035 · arxiv_version: 1406.1035v1 · doi: 10.48550/arxiv.1406.1035 · pith_short_12: QQRBKNO47YCO · pith_short_16: QQRBKNO47YCO3S74 · pith_short_8: QQRBKNO4

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/QQRBKNO47YCO3S74WXPKYNB7CI \
  | 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: 84221535dcfe04edcbfcb5deac343f12090a7ac53f9389cc77ba21dc314a2779

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1e0ecf96fa3243420c3d5fee47c690688c096a23bb5857e12eb0781fecace57b",
    "cross_cats_sorted": [
      "cs.LO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.FL",
    "submitted_at": "2014-06-03T06:05:19Z",
    "title_canon_sha256": "6a7865017e7c0ac7a33a33f906fd922243eee5f9482bd660f17b1a6a62bcc3e7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1406.1035",
    "kind": "arxiv",
    "version": 1
  }
}