Pith Number

pith:3XVPHX4A

pith:2011:3XVPHX4AMO6O6BQTQK325FEPBS

not attested not anchored not stored refs pending

Non-deterministic inductive definitions

Benno van den Berg

arxiv:1104.2744 v2 · 2011-04-14 · 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{3XVPHX4AMO6O6BQTQK325FEPBS}

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	2026-05-18T03:45:40.242833Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ddeaf3df8063bcef061382b7ae948f0c9ee04ead72eb0065a13a9ceb099c0a9d

Aliases

arxiv: 1104.2744 · arxiv_version: 1104.2744v2 · doi: 10.48550/arxiv.1104.2744 · pith_short_12: 3XVPHX4AMO6O · pith_short_16: 3XVPHX4AMO6O6BQT · pith_short_8: 3XVPHX4A

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/3XVPHX4AMO6O6BQTQK325FEPBS \
  | 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: ddeaf3df8063bcef061382b7ae948f0c9ee04ead72eb0065a13a9ceb099c0a9d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "93b604fb6108688827fd8b3541fa6d6c971c9d4d5bf3e468f96077cfb2051006",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2011-04-14T12:47:18Z",
    "title_canon_sha256": "22241def6a494e79481b83ae979cc28aa06b21f1d39fe7d310dbea8d845737c2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1104.2744",
    "kind": "arxiv",
    "version": 2
  }
}