Pith Number

pith:WYCPJ2U7

pith:2014:WYCPJ2U7PZCH6UGCC3GRUZ7ILB

not attested not anchored not stored refs pending

Cathoristic logic: A modal logic of incompatible propositions

Martin Berger, Richard Prideaux Evans

arxiv:1411.7158 v1 · 2014-11-26 · 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{WYCPJ2U7PZCH6UGCC3GRUZ7ILB}

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	2026-05-18T02:32:45.145858Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b604f4ea9f7e447f50c216cd1a67e85848f08801bca243a31c7d55f77b7a9a57

Aliases

arxiv: 1411.7158 · arxiv_version: 1411.7158v1 · doi: 10.48550/arxiv.1411.7158 · pith_short_12: WYCPJ2U7PZCH · pith_short_16: WYCPJ2U7PZCH6UGC · pith_short_8: WYCPJ2U7

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/WYCPJ2U7PZCH6UGCC3GRUZ7ILB \
  | 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: b604f4ea9f7e447f50c216cd1a67e85848f08801bca243a31c7d55f77b7a9a57

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c8ae642a69350bd2df508788fe115a3de84ebd69477e28b6441680fea9620be4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2014-11-26T09:57:58Z",
    "title_canon_sha256": "6cfaadaf13b4d50b23878a266b2ea3b6b3e7a99cac0ac806707d8f09eb914b5d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1411.7158",
    "kind": "arxiv",
    "version": 1
  }
}