Pith Number

pith:P4NK6EX3

pith:2013:P4NK6EX3LEQ677OVTMEFXSTZG7

not attested not anchored not stored refs pending

Query-driven Frequent Co-occurring Term Extraction over Relational Data using MapReduce

Chengfei Liu, Jeffrey Xu Yu, Jianxin Li, Liang Yao, Rui Zhou

arxiv:1301.2378 v1 · 2013-01-11 · 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{P4NK6EX3LEQ677OVTMEFXSTZG7}

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	2026-05-18T03:36:38.088686Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7f1aaf12fb5921effdd59b085bca7937f5238a1227e7790e161de5f01a9e1a31

Aliases

arxiv: 1301.2378 · arxiv_version: 1301.2378v1 · doi: 10.48550/arxiv.1301.2378 · pith_short_12: P4NK6EX3LEQ6 · pith_short_16: P4NK6EX3LEQ677OV · pith_short_8: P4NK6EX3

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/P4NK6EX3LEQ677OVTMEFXSTZG7 \
  | 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: 7f1aaf12fb5921effdd59b085bca7937f5238a1227e7790e161de5f01a9e1a31

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "05d01b9ec7b326d44cee14b9bef5541cdb4ff9d358e7799b6a0046230fe49105",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DB",
    "submitted_at": "2013-01-11T01:55:10Z",
    "title_canon_sha256": "7ecc94ee9255768d7ff019c15914aaed4fc61270c692c7338b7d7551fc7781e3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1301.2378",
    "kind": "arxiv",
    "version": 1
  }
}