Pith Number

pith:AIJ3UGAE

pith:2017:AIJ3UGAE7OVLZTWWKDAAE2A2AK

not attested not anchored not stored refs pending

Matroids Hitting Sets and Unsupervised Dependency Grammar Induction

David Karger, Leonid Peshkin, Nicholas Harvey, Vahab Mirrokni, Virginia Savova

arxiv:1705.08992 v2 · 2017-05-24 · cs.DM · cs.CL · cs.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{AIJ3UGAE7OVLZTWWKDAAE2A2AK}

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	2026-05-18T00:40:12.866658Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0213ba1804fbaabcced650c002681a0282fbf246f51ef42e54596fe9ed6f76d3

Aliases

arxiv: 1705.08992 · arxiv_version: 1705.08992v2 · doi: 10.48550/arxiv.1705.08992 · pith_short_12: AIJ3UGAE7OVL · pith_short_16: AIJ3UGAE7OVLZTWW · pith_short_8: AIJ3UGAE

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/AIJ3UGAE7OVLZTWWKDAAE2A2AK \
  | 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: 0213ba1804fbaabcced650c002681a0282fbf246f51ef42e54596fe9ed6f76d3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "951f606e2a72ca36981cfe55761976d04de012d209e8f7806198f927c12d8737",
    "cross_cats_sorted": [
      "cs.CL",
      "cs.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2017-05-24T22:53:56Z",
    "title_canon_sha256": "9e591657b77df2754f5262b9b6a3030dc30c5f26f6d9ce3f6c19ff9bd33249a7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1705.08992",
    "kind": "arxiv",
    "version": 2
  }
}