Pith Number

pith:I35NDHJP

pith:2013:I35NDHJPU3SMTMNH5AAZWVIJ6Q

not attested not anchored not stored refs pending

Towards a theory of good SAT representations

Matthew Gwynne, Oliver Kullmann

arxiv:1302.4421 v4 · 2013-02-18 · cs.AI · 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{I35NDHJPU3SMTMNH5AAZWVIJ6Q}

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	2026-05-18T03:26:00.270717Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

46fad19d2fa6e4c9b1a7e8019b5509f414487e9f20b2de529ab0473b11251f3c

Aliases

arxiv: 1302.4421 · arxiv_version: 1302.4421v4 · doi: 10.48550/arxiv.1302.4421 · pith_short_12: I35NDHJPU3SM · pith_short_16: I35NDHJPU3SMTMNH · pith_short_8: I35NDHJP

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/I35NDHJPU3SMTMNH5AAZWVIJ6Q \
  | 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: 46fad19d2fa6e4c9b1a7e8019b5509f414487e9f20b2de529ab0473b11251f3c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f0f3f6cf3adec9254fdaaf036336a6db382260c4f6ce7b52af2ca4777d3e6a6a",
    "cross_cats_sorted": [
      "cs.LO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2013-02-18T20:40:06Z",
    "title_canon_sha256": "715785c5f377a035a2c82681226a0d6ffdf7bcea3844f64e98bdac9bfa537428"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1302.4421",
    "kind": "arxiv",
    "version": 4
  }
}