Pith Number

pith:FGENVNFP

pith:2011:FGENVNFPNI7QQUPSQBQLUVUITW

not attested not anchored not stored refs pending

A KIF Formalization for the IFF Category Theory Ontology

Robert E. Kent

arxiv:1109.0333 v1 · 2011-09-02 · cs.LO · cs.AI · math.CT

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FGENVNFPNI7QQUPSQBQLUVUITW}

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	2026-05-18T04:14:15.951832Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2988dab4af6a3f0851f28060ba56889dbf73c71ee864b201d0ca01c99ac2111e

Aliases

arxiv: 1109.0333 · arxiv_version: 1109.0333v1 · doi: 10.48550/arxiv.1109.0333 · pith_short_12: FGENVNFPNI7Q · pith_short_16: FGENVNFPNI7QQUPS · pith_short_8: FGENVNFP

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/FGENVNFPNI7QQUPSQBQLUVUITW \
  | 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: 2988dab4af6a3f0851f28060ba56889dbf73c71ee864b201d0ca01c99ac2111e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b3bcc84fb3e5c877713f0b02667cb1d130aacf9520a6539e25315415965bec59",
    "cross_cats_sorted": [
      "cs.AI",
      "math.CT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2011-09-02T00:20:04Z",
    "title_canon_sha256": "7da0ae56dfb64ff01c7d2d9d5f8acc0ff2d125396ce31d7f9fd5e7ad33f77bbb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.0333",
    "kind": "arxiv",
    "version": 1
  }
}