Pith Number

pith:PZOSRU6H

pith:2019:PZOSRU6HA5LU3GBLCQEEL5MTOS

not attested not anchored not stored refs pending

What is a logical theory? On theories containing assertions and denials

Carlos Caleiro, Carolina Blasio, Jo\~ao Marcos

arxiv:1903.02338 v3 · 2019-03-06 · 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{PZOSRU6HA5LU3GBLCQEEL5MTOS}

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	2026-05-17T23:49:32.771668Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7e5d28d3c707574d982b140845f59374b9f5783953daf9c821204d1afd663d9b

Aliases

arxiv: 1903.02338 · arxiv_version: 1903.02338v3 · doi: 10.48550/arxiv.1903.02338 · pith_short_12: PZOSRU6HA5LU · pith_short_16: PZOSRU6HA5LU3GBL · pith_short_8: PZOSRU6H

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/PZOSRU6HA5LU3GBLCQEEL5MTOS \
  | 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: 7e5d28d3c707574d982b140845f59374b9f5783953daf9c821204d1afd663d9b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "620b9ad808bcbb0517d94eb8e341e4aac6bc31bc35d860fcbeabadeb1fce85da",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2019-03-06T12:28:37Z",
    "title_canon_sha256": "2ef309bb1c626148815733c398538e2843d01dc3378cadd22d483642fd9c18a3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.02338",
    "kind": "arxiv",
    "version": 3
  }
}