Pith Number

pith:C6BV6PUZ

pith:2018:C6BV6PUZ5LAMLTD5RKH3HARDDZ

not attested not anchored not stored refs pending

Logic of Approximate Entailment in quasimetric spaces

Thomas Vetterlein

arxiv:1808.10320 v1 · 2018-08-30 · 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{C6BV6PUZ5LAMLTD5RKH3HARDDZ}

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	2026-05-18T00:06:49.162278Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

17835f3e99eac0c5cc7d8a8fb382231e690e2a0ba3fe33a9c01603a9e2b7ade5

Aliases

arxiv: 1808.10320 · arxiv_version: 1808.10320v1 · doi: 10.48550/arxiv.1808.10320 · pith_short_12: C6BV6PUZ5LAM · pith_short_16: C6BV6PUZ5LAMLTD5 · pith_short_8: C6BV6PUZ

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/C6BV6PUZ5LAMLTD5RKH3HARDDZ \
  | 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: 17835f3e99eac0c5cc7d8a8fb382231e690e2a0ba3fe33a9c01603a9e2b7ade5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b393ea64cc1a4b1d51220eefe9457bacc95f4bb496fbc4fd6d1a6a45a6c58dc1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2018-08-30T14:44:52Z",
    "title_canon_sha256": "3258f1747e2e1bac0637714edba6040f736fb85a6718f569eb809018dbda38db"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.10320",
    "kind": "arxiv",
    "version": 1
  }
}