Pith Number

pith:A4Z4K6DE

pith:2014:A4Z4K6DEUH5GMDM2LYBBPM3KNP

not attested not anchored not stored refs pending

On the Computation of Distances for Probabilistic Context-Free Grammars

Colin de la Higuera, James Scicluna, Mark-Jan Nederhof

arxiv:1407.1513 v1 · 2014-07-06 · cs.FL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{A4Z4K6DEUH5GMDM2LYBBPM3KNP}

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.

Cited by

2 papers in Pith

Fine-tuning vs. In-context Learning in Large Language Models: A Formal Language Learning Perspective

Receipt and verification

First computed	2026-05-18T02:48:16.368994Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0733c57864a1fa660d9a5e0217b36a6bcb6995a57f1eba59b98f6bb2d96df730

Aliases

arxiv: 1407.1513 · arxiv_version: 1407.1513v1 · doi: 10.48550/arxiv.1407.1513 · pith_short_12: A4Z4K6DEUH5G · pith_short_16: A4Z4K6DEUH5GMDM2 · pith_short_8: A4Z4K6DE

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/A4Z4K6DEUH5GMDM2LYBBPM3KNP \
  | 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: 0733c57864a1fa660d9a5e0217b36a6bcb6995a57f1eba59b98f6bb2d96df730

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bb552b16c3957dbb1ccfef9bf4dfc59aa23de713e89f71e180bfb1cb8f2d0c0d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.FL",
    "submitted_at": "2014-07-06T16:26:57Z",
    "title_canon_sha256": "8870fb1fbf6afd8bce818f1bc391ffd95b6717d604156bd11015f6d38cb25633"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1407.1513",
    "kind": "arxiv",
    "version": 1
  }
}