Pith Number

pith:K3K57VMV

pith:2011:K3K57VMVVLOA3O7UF2AQOHZHT2

not attested not anchored not stored refs pending

Drawing Sound Conclusions from Unsound Premises

Claudia Picardi, Daniele Mundici

arxiv:1109.0915 v1 · 2011-09-05 · cs.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{K3K57VMVVLOA3O7UF2AQOHZHT2}

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	2026-05-18T04:14:06.380255Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

56d5dfd595aadc0dbbf42e81071f279e9a6fae33940edc5568e672ace7cd1847

Aliases

arxiv: 1109.0915 · arxiv_version: 1109.0915v1 · doi: 10.48550/arxiv.1109.0915 · pith_short_12: K3K57VMVVLOA · pith_short_16: K3K57VMVVLOA3O7U · pith_short_8: K3K57VMV

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/K3K57VMVVLOA3O7UF2AQOHZHT2 \
  | 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: 56d5dfd595aadc0dbbf42e81071f279e9a6fae33940edc5568e672ace7cd1847

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "831e572a78353a3c9a7a1114833be47e13490e14103dddc5543835db5f060744",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2011-09-05T14:37:27Z",
    "title_canon_sha256": "af29f8a63c47a2524d843c9516937e37e1bb72c0bfede6f8c474585b0e79392d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.0915",
    "kind": "arxiv",
    "version": 1
  }
}