Pith Number

pith:CJU4ON3L

pith:2014:CJU4ON3LROLHPFWV6NU5DQVZAH

not attested not anchored not stored refs pending

A logic for reasoning about ambiguity

Joseph Y. Halpern, Willemien Kets

arxiv:1401.2011 v1 · 2014-01-09 · cs.AI · cs.GT · 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{CJU4ON3LROLHPFWV6NU5DQVZAH}

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	2026-05-18T03:02:47.779759Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1269c7376b8b967796d5f369d1c2b901da2379b29f6c6c694b6171f2d9ccd23f

Aliases

arxiv: 1401.2011 · arxiv_version: 1401.2011v1 · doi: 10.48550/arxiv.1401.2011 · pith_short_12: CJU4ON3LROLH · pith_short_16: CJU4ON3LROLHPFWV · pith_short_8: CJU4ON3L

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/CJU4ON3LROLHPFWV6NU5DQVZAH \
  | 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: 1269c7376b8b967796d5f369d1c2b901da2379b29f6c6c694b6171f2d9ccd23f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8703581d2c5bdf6428b9f4d650d8606c024d192eaf73cecde8bbba40d2af871e",
    "cross_cats_sorted": [
      "cs.GT",
      "cs.LO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2014-01-09T14:19:54Z",
    "title_canon_sha256": "b05d99e1672bf3dafb24fefca3b48e01c8404cb3489c6d64cc7cd087dcd5795a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1401.2011",
    "kind": "arxiv",
    "version": 1
  }
}