Pith Number

pith:3NY5E3IA

pith:2009:3NY5E3IAUENGF4CH7JCPJFLWYY

not attested not anchored not stored refs pending

Kripke Models for Classical Logic

Danko Ilik (PPS, Gyesik Lee (ROSAEC), Hugo Herbelin (PPS, INRIA Paris - Rocquencourt, INRIA Paris - Rocquencourt), LIX)

arxiv:0904.0071 v5 · 2009-04-01 · math.LO · 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{3NY5E3IAUENGF4CH7JCPJFLWYY}

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	2026-05-18T02:38:53.466307Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

db71d26d00a11a62f047fa44f49576c627d85646e9149f40f5481124e28ddede

Aliases

arxiv: 0904.0071 · arxiv_version: 0904.0071v5 · doi: 10.48550/arxiv.0904.0071 · pith_short_12: 3NY5E3IAUENG · pith_short_16: 3NY5E3IAUENGF4CH · pith_short_8: 3NY5E3IA

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/3NY5E3IAUENGF4CH7JCPJFLWYY \
  | 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: db71d26d00a11a62f047fa44f49576c627d85646e9149f40f5481124e28ddede

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "17729626f267612ece8dcd1f0803b6037ca701200b0031a40accc96117fc1d00",
    "cross_cats_sorted": [
      "cs.LO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2009-04-01T06:26:47Z",
    "title_canon_sha256": "69a9b94d57fe0e1a07af6e211ad00c832caede549a7cbd723a3d7ee4fc516858"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.0071",
    "kind": "arxiv",
    "version": 5
  }
}