Pith Number

pith:MF43TTGN

pith:2018:MF43TTGNV3C4NZ5QCNU74GNECF

not attested not anchored not stored refs pending

Syntax Error Recovery in Parsing Expression Grammars

Fabio Mascarenhas, S\'ergio Medeiros

arxiv:1806.11150 v1 · 2018-06-28 · cs.PL · 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{MF43TTGNV3C4NZ5QCNU74GNECF}

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	2026-05-18T00:12:03.476414Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6179b9cccdaec5c6e7b01369fe19a4117347a9330de0da7667a0a7ab19ef4a53

Aliases

arxiv: 1806.11150 · arxiv_version: 1806.11150v1 · doi: 10.48550/arxiv.1806.11150 · pith_short_12: MF43TTGNV3C4 · pith_short_16: MF43TTGNV3C4NZ5Q · pith_short_8: MF43TTGN

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/MF43TTGNV3C4NZ5QCNU74GNECF \
  | 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: 6179b9cccdaec5c6e7b01369fe19a4117347a9330de0da7667a0a7ab19ef4a53

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1a124c52ad27b2d9f0764c97eaa3c981c0d870cedabbcfc6a0380b639328f17a",
    "cross_cats_sorted": [
      "cs.FL"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.PL",
    "submitted_at": "2018-06-28T19:20:06Z",
    "title_canon_sha256": "ff0514cc78f32c6033ce6c46403b0b85df81d1093689008e68ab465df609803c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1806.11150",
    "kind": "arxiv",
    "version": 1
  }
}