Pith Number

pith:HCO6ESZC

pith:2018:HCO6ESZCQGAHLD2NAGTRS7VCBQ

not attested not anchored not stored refs pending

Goldblatt-Thomason for LE-logics

Alessandra Palmigiano, Apostolos Tzimoulis, Willem Conradie

arxiv:1809.08225 v1 · 2018-09-21 · math.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{HCO6ESZCQGAHLD2NAGTRS7VCBQ}

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	2026-05-18T00:05:10.016125Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

389de24b228180758f4d01a7197ea20c1c891eddfbd1842f48dac7b32430eca0

Aliases

arxiv: 1809.08225 · arxiv_version: 1809.08225v1 · doi: 10.48550/arxiv.1809.08225 · pith_short_12: HCO6ESZCQGAH · pith_short_16: HCO6ESZCQGAHLD2N · pith_short_8: HCO6ESZC

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/HCO6ESZCQGAHLD2NAGTRS7VCBQ \
  | 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: 389de24b228180758f4d01a7197ea20c1c891eddfbd1842f48dac7b32430eca0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ccf7094c29fa968aeddd1740598c1b1d2c2354337e0da4c7e596cad9e04edc08",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2018-09-21T17:50:35Z",
    "title_canon_sha256": "6809d044506fde5d2ba355ee02ac1af8caa73572c02f61a401434ca29878a22f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.08225",
    "kind": "arxiv",
    "version": 1
  }
}