Pith Number

pith:FQGR54ER

pith:2012:FQGR54ERNUCXSICA7NFHV7OJ6X

not attested not anchored not stored refs pending

Queries with Guarded Negation (full version)

Balder ten Cate, Martin Otto, Vince Barany

arxiv:1203.0077 v1 · 2012-03-01 · cs.DB

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FQGR54ERNUCXSICA7NFHV7OJ6X}

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	2026-05-18T04:01:03.277695Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2c0d1ef0916d05792040fb4a7afdc9f5ed8a3e5906641d4c7b8017cf1ebb728b

Aliases

arxiv: 1203.0077 · arxiv_version: 1203.0077v1 · doi: 10.48550/arxiv.1203.0077 · pith_short_12: FQGR54ERNUCX · pith_short_16: FQGR54ERNUCXSICA · pith_short_8: FQGR54ER

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/FQGR54ERNUCXSICA7NFHV7OJ6X \
  | 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: 2c0d1ef0916d05792040fb4a7afdc9f5ed8a3e5906641d4c7b8017cf1ebb728b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e9dd98dcadb45d3a3c3b28e93a266238b5519e30dcea48479e231b3621663a89",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DB",
    "submitted_at": "2012-03-01T02:34:00Z",
    "title_canon_sha256": "c0c04d4028488285ba4860c8e6e6d26333ae820d1d42921b88c50bda7438494a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.0077",
    "kind": "arxiv",
    "version": 1
  }
}