Pith Number

pith:C45JVAVR

pith:2019:C45JVAVRF353QW533ZM7ROTCCC

not attested not anchored not stored refs pending

TopicEq: A Joint Topic and Mathematical Equation Model for Scientific Texts

John Lafferty, Michihiro Yasunaga

arxiv:1902.06034 v3 · 2019-02-16 · cs.IR · cs.CL · cs.LG · stat.ML

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{C45JVAVRF353QW533ZM7ROTCCC}

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	2026-05-17T23:47:43.790801Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

173a9a82b12efbb85bbbde59f8ba6210b3b232c706802ca524210a682527e60a

Aliases

arxiv: 1902.06034 · arxiv_version: 1902.06034v3 · doi: 10.48550/arxiv.1902.06034 · pith_short_12: C45JVAVRF353 · pith_short_16: C45JVAVRF353QW53 · pith_short_8: C45JVAVR

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/C45JVAVRF353QW533ZM7ROTCCC \
  | 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: 173a9a82b12efbb85bbbde59f8ba6210b3b232c706802ca524210a682527e60a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3a4c0a5488a26f257f6c0c3666903d94f443fd23650ea01bb2eb17c2c0a021fd",
    "cross_cats_sorted": [
      "cs.CL",
      "cs.LG",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2019-02-16T03:39:51Z",
    "title_canon_sha256": "e307eb97447d32ecb4e7dbfb04866496e4f1952a2e554185596b93e44d9db9f6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.06034",
    "kind": "arxiv",
    "version": 3
  }
}