Pith Number

pith:A2O4VM5D

pith:2013:A2O4VM5D7L26IZMOWK2BP67QZY

not attested not anchored not stored refs pending

Three Generalizations of the FOCUS Constraint

Mohamed Siala, Nina Narodytska, Thierry Petit, Toby Walsh

arxiv:1304.5970 v1 · 2013-04-22 · cs.AI

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{A2O4VM5D7L26IZMOWK2BP67QZY}

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	2026-05-18T03:27:23.638880Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

069dcab3a3faf5e4658eb2b417fbf0ce1f1fcb7175b31c8361d816d2362079fa

Aliases

arxiv: 1304.5970 · arxiv_version: 1304.5970v1 · doi: 10.48550/arxiv.1304.5970 · pith_short_12: A2O4VM5D7L26 · pith_short_16: A2O4VM5D7L26IZMO · pith_short_8: A2O4VM5D

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/A2O4VM5D7L26IZMOWK2BP67QZY \
  | 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: 069dcab3a3faf5e4658eb2b417fbf0ce1f1fcb7175b31c8361d816d2362079fa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3d71643624548ab654a478cde6fb9d739a0b59d85a056e8b7015c13bb88882b7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2013-04-22T14:48:58Z",
    "title_canon_sha256": "420e4b1c5962ff32958ebc2a44083ed6fa6295d3d529d804f47e22320aaeaf03"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1304.5970",
    "kind": "arxiv",
    "version": 1
  }
}