Pith Number

pith:M6XC5GKI

pith:2016:M6XC5GKIMFRZTQI3B6YOAMELAO

not attested not anchored not stored refs pending

Optimal Test Sets for Context-Free Languages

Jad Hamza, Mika\"el Mayer

arxiv:1611.06703 v1 · 2016-11-21 · 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{M6XC5GKIMFRZTQI3B6YOAMELAO}

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	2026-05-18T00:57:33.133962Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

67ae2e9948616399c11b0fb0e0308b03aaf2d835f0f02b8cfe6235a11677133d

Aliases

arxiv: 1611.06703 · arxiv_version: 1611.06703v1 · doi: 10.48550/arxiv.1611.06703 · pith_short_12: M6XC5GKIMFRZ · pith_short_16: M6XC5GKIMFRZTQI3 · pith_short_8: M6XC5GKI

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/M6XC5GKIMFRZTQI3B6YOAMELAO \
  | 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: 67ae2e9948616399c11b0fb0e0308b03aaf2d835f0f02b8cfe6235a11677133d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "45ccb439490cb8df6e29acf7f05ccacf62429471362d4ae174d8d76df7c68a4d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.FL",
    "submitted_at": "2016-11-21T10:02:02Z",
    "title_canon_sha256": "6530410c6974b601f6c79bdc1ad4e38cf405b6bc7e4c4a5f8a62887695c44c78"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1611.06703",
    "kind": "arxiv",
    "version": 1
  }
}