Pith Number

pith:XTFQ3OEP

pith:2011:XTFQ3OEPLSWSCBVGTEFP75NWT2

not attested not anchored not stored refs pending

Nominal Logic with Equations Only

Ranald Clouston

arxiv:1111.0088 v1 · 2011-11-01 · 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{XTFQ3OEPLSWSCBVGTEFP75NWT2}

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	2026-05-18T04:09:46.430852Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bccb0db88f5cad2106a6990afff5b69ea7a7b3fc9ac21ab37cc2ca2ae2db349d

Aliases

arxiv: 1111.0088 · arxiv_version: 1111.0088v1 · doi: 10.48550/arxiv.1111.0088 · pith_short_12: XTFQ3OEPLSWS · pith_short_16: XTFQ3OEPLSWSCBVG · pith_short_8: XTFQ3OEP

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/XTFQ3OEPLSWSCBVGTEFP75NWT2 \
  | 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: bccb0db88f5cad2106a6990afff5b69ea7a7b3fc9ac21ab37cc2ca2ae2db349d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9aa8102871e7469b96a5be36133df659033827053d47506976e2afa63c37de8e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2011-11-01T00:18:17Z",
    "title_canon_sha256": "80c3d3eaecd7011d924d6f73073372e476676c007afa9f119b7f0e5a5bf615fe"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1111.0088",
    "kind": "arxiv",
    "version": 1
  }
}