Pith Number

pith:3MERFGS6

pith:2017:3MERFGS6IL7Y4EPDXUTIMISJJU

not attested not anchored not stored refs pending

Grammatical Inference as a Satisfiability Modulo Theories Problem

Rick Smetsers

arxiv:1705.10639 v1 · 2017-05-30 · cs.FL · cs.LG · cs.LO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3MERFGS6IL7Y4EPDXUTIMISJJU}

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	2026-05-18T00:43:23.955496Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

db09129a5e42ff8e11e3bd268622494d15690f46df59396edb8d535a2bb96d22

Aliases

arxiv: 1705.10639 · arxiv_version: 1705.10639v1 · doi: 10.48550/arxiv.1705.10639 · pith_short_12: 3MERFGS6IL7Y · pith_short_16: 3MERFGS6IL7Y4EPD · pith_short_8: 3MERFGS6

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/3MERFGS6IL7Y4EPDXUTIMISJJU \
  | 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: db09129a5e42ff8e11e3bd268622494d15690f46df59396edb8d535a2bb96d22

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ee302902d1c8e80fdcfec682bc2ba8d9e9548ffd88333d87664ee93b353dc95c",
    "cross_cats_sorted": [
      "cs.LG",
      "cs.LO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.FL",
    "submitted_at": "2017-05-30T13:48:15Z",
    "title_canon_sha256": "dacddf761fdf0a7c33005a29d1fdd3b1f6f54274ca9d59f56bbb223efd33115a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1705.10639",
    "kind": "arxiv",
    "version": 1
  }
}