Pith Number

pith:MELB2QEF

pith:2011:MELB2QEFX2NUXO5OUI7KLCNGDK

not attested not anchored not stored refs pending

Arc Consistency and Friends

Berit Gru{\ss}ien, Hubie Chen, Victor Dalmau

arxiv:1104.4993 v1 · 2011-04-26 · cs.AI · cs.CC · 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{MELB2QEFX2NUXO5OUI7KLCNGDK}

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	2026-05-18T04:23:32.627516Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

61161d4085be9b4bbbaea23ea589a61a974f3d684f14728c0b2ef1e7001503aa

Aliases

arxiv: 1104.4993 · arxiv_version: 1104.4993v1 · doi: 10.48550/arxiv.1104.4993 · pith_short_12: MELB2QEFX2NU · pith_short_16: MELB2QEFX2NUXO5O · pith_short_8: MELB2QEF

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/MELB2QEFX2NUXO5OUI7KLCNGDK \
  | 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: 61161d4085be9b4bbbaea23ea589a61a974f3d684f14728c0b2ef1e7001503aa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b9366f15461638fc819d88541af037430429b2834e8510703598fca6fb77dfcb",
    "cross_cats_sorted": [
      "cs.CC",
      "cs.LO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2011-04-26T18:52:57Z",
    "title_canon_sha256": "c1c8d52e5661838870ed461a008a6f15de659f0b6b9362572b2f6e6ef6fa9cd5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1104.4993",
    "kind": "arxiv",
    "version": 1
  }
}