Pith Number

pith:2PYIJPIG

pith:2017:2PYIJPIG5JUJ4SDHQDK5XYNJDM

not attested not anchored not stored refs pending

First-order logic with incomplete information

Antti Kuusisto

arxiv:1703.03391 v14 · 2017-03-09 · 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{2PYIJPIG5JUJ4SDHQDK5XYNJDM}

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	2026-05-17T23:57:03.404424Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d3f084bd06ea689e486780d5dbe1a91b3aa4de422c3a4b5cffedd4083c8145ea

Aliases

arxiv: 1703.03391 · arxiv_version: 1703.03391v14 · doi: 10.48550/arxiv.1703.03391 · pith_short_12: 2PYIJPIG5JUJ · pith_short_16: 2PYIJPIG5JUJ4SDH · pith_short_8: 2PYIJPIG

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/2PYIJPIG5JUJ4SDHQDK5XYNJDM \
  | 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: d3f084bd06ea689e486780d5dbe1a91b3aa4de422c3a4b5cffedd4083c8145ea

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8443f6943490cb8b8ddd400e30f85b708272a2f92fd1f22087382bb79bcb0e50",
    "cross_cats_sorted": [
      "cs.LO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2017-03-09T18:46:14Z",
    "title_canon_sha256": "bb805f4020334f0042f5794457bd9c0797bcae3681b498047861d72ca110dfe6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1703.03391",
    "kind": "arxiv",
    "version": 14
  }
}