Pith Number

pith:CBJOSNO6

pith:2014:CBJOSNO6QMR2J2MO3D4UAH5JQL

not attested not anchored not stored refs pending

Topos Semantics for Higher-Order Modal Logic

Hans-Christoph Kotzsch, Kohei Kishida, Steve Awodey

arxiv:1403.0020 v1 · 2014-02-28 · math.LO · 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{CBJOSNO6QMR2J2MO3D4UAH5JQL}

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	2026-05-18T00:49:35.315639Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1052e935de8323a4e98ed8f9401fa982c2918980aec4f36d7e24f1291f3a785a

Aliases

arxiv: 1403.0020 · arxiv_version: 1403.0020v1 · doi: 10.48550/arxiv.1403.0020 · pith_short_12: CBJOSNO6QMR2 · pith_short_16: CBJOSNO6QMR2J2MO · pith_short_8: CBJOSNO6

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/CBJOSNO6QMR2J2MO3D4UAH5JQL \
  | 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: 1052e935de8323a4e98ed8f9401fa982c2918980aec4f36d7e24f1291f3a785a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8f550892163d2d24e0d607bd53032649d9fb2672472fe6179d32d54f47a5db0f",
    "cross_cats_sorted": [
      "math.CT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2014-02-28T22:05:11Z",
    "title_canon_sha256": "5df56084b7060d32b72ce1e267a06d0604f88bfec9b1c7b071a1a81a6351826c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1403.0020",
    "kind": "arxiv",
    "version": 1
  }
}