Pith Number

pith:UCNPO47O

pith:2014:UCNPO47OOXFCWDH42WSRAYARYF

not attested not anchored not stored refs pending

Hierarchies in inclusion logic with lax semantics

Miika Hannula

arxiv:1401.3235 v1 · 2014-01-14 · 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{UCNPO47OOXFCWDH42WSRAYARYF}

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	2026-05-18T03:02:19.179481Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a09af773ee75ca2b0cfcd5a5106011c16ee1ad97a76fcf23d8c5d680d482be87

Aliases

arxiv: 1401.3235 · arxiv_version: 1401.3235v1 · doi: 10.48550/arxiv.1401.3235 · pith_short_12: UCNPO47OOXFC · pith_short_16: UCNPO47OOXFCWDH4 · pith_short_8: UCNPO47O

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/UCNPO47OOXFCWDH42WSRAYARYF \
  | 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: a09af773ee75ca2b0cfcd5a5106011c16ee1ad97a76fcf23d8c5d680d482be87

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "40dc67016085473ab05fc04052ae46761afc3d91f1d655461f469da0d97d82c4",
    "cross_cats_sorted": [
      "cs.LO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2014-01-14T16:03:30Z",
    "title_canon_sha256": "f0f1e46ebf887a471db88729cbe34a4cf0421e3aff27a73cdc8e91bdd2e8d62d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1401.3235",
    "kind": "arxiv",
    "version": 1
  }
}