Pith Number

pith:S2L6QJF2

pith:1992:S2L6QJF2YACCIHCYC57VM5EAHC

not attested not anchored not stored refs pending

The Complexity of the Core Model

William J. Mitchell

arxiv:math/9210202 v1 · 1992-10-07 · 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{S2L6QJF2YACCIHCYC57VM5EAHC}

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	2026-05-18T01:05:52.598519Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9697e824bac004241c58177f56748038b233f537fefc7291b12a36532f139dbe

Aliases

arxiv: math/9210202 · arxiv_version: math/9210202v1 · doi: 10.48550/arxiv.math/9210202 · pith_short_12: S2L6QJF2YACC · pith_short_16: S2L6QJF2YACCIHCY · pith_short_8: S2L6QJF2

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/S2L6QJF2YACCIHCYC57VM5EAHC \
  | 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: 9697e824bac004241c58177f56748038b233f537fefc7291b12a36532f139dbe

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "18a3e5220f5308d1f5dc89bf176aad4ff47f9a366dd2aa29a3f535b10d8401bf",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "math.LO",
    "submitted_at": "1992-10-07T00:00:00Z",
    "title_canon_sha256": "d08e488cade4db4954a465dab82e101d911f9b74e9f11985c3deb0089f0369dd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/9210202",
    "kind": "arxiv",
    "version": 1
  }
}