Pith Number

pith:CUUKY6PM

pith:2013:CUUKY6PMB54XIHIXF5ENQPCHC4

not attested not anchored not stored refs pending

Synchronous Context-Free Grammars and Optimal Linear Parsing Strategies

Andrea Marino, Daniel Gildea, Gianluca Rossi, Giorgio Satta, Pierluigi Crescenzi

arxiv:1311.6421 v1 · 2013-11-25 · cs.FL · 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{CUUKY6PMB54XIHIXF5ENQPCHC4}

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	2026-05-18T03:06:12.599398Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1528ac79ec0f79741d172f48d83c471725ac5e936a131179e7917e0efe45a9b2

Aliases

arxiv: 1311.6421 · arxiv_version: 1311.6421v1 · doi: 10.48550/arxiv.1311.6421 · pith_short_12: CUUKY6PMB54X · pith_short_16: CUUKY6PMB54XIHIX · pith_short_8: CUUKY6PM

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/CUUKY6PMB54XIHIXF5ENQPCHC4 \
  | 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: 1528ac79ec0f79741d172f48d83c471725ac5e936a131179e7917e0efe45a9b2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e7368876c23d238bcec796dd4ca433144080ea6ad2a610957244f93b0c739953",
    "cross_cats_sorted": [
      "cs.CL"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.FL",
    "submitted_at": "2013-11-25T19:48:30Z",
    "title_canon_sha256": "5927ccb1edda547a655d7fafba366b899cdbc201a84a48e600d80fbb4a28b3b2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1311.6421",
    "kind": "arxiv",
    "version": 1
  }
}