Pith Number

pith:ROVPG4EJ

pith:2017:ROVPG4EJWCLIJV7EAS6EIXDLHM

not attested not anchored not stored refs pending

On the Complexity of CCG Parsing

Giorgio Satta, Marco Kuhlmann, Peter Jonsson

arxiv:1702.06594 v2 · 2017-02-21 · cs.CL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ROVPG4EJWCLIJV7EAS6EIXDLHM}

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	2026-05-18T00:16:50.823555Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8baaf37089b09684d7e404bc445c6b3b09644e054c812088d985a2dfe10d836e

Aliases

arxiv: 1702.06594 · arxiv_version: 1702.06594v2 · doi: 10.48550/arxiv.1702.06594 · pith_short_12: ROVPG4EJWCLI · pith_short_16: ROVPG4EJWCLIJV7E · pith_short_8: ROVPG4EJ

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/ROVPG4EJWCLIJV7EAS6EIXDLHM \
  | 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: 8baaf37089b09684d7e404bc445c6b3b09644e054c812088d985a2dfe10d836e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "522a10a7eb277313eb7c8b97394b2d14cf5049ee9d1028842baa8c3bcdb72f52",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2017-02-21T21:36:51Z",
    "title_canon_sha256": "3c2434874ce9e1ba99e4993268570dc23af769502c18589e55158302d43b3862"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1702.06594",
    "kind": "arxiv",
    "version": 2
  }
}