Pith Number

pith:WD5UEMGH

pith:2009:WD5UEMGHB5NBTSTH7WOTG2BIWA

not attested not anchored not stored refs pending

ALLSAT compressed with wildcards: All, or all maximum independent sets

Marcel Wild

arxiv:0901.4417 v4 · 2009-01-28 · cs.DS · cs.DM · cs.MS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WD5UEMGHB5NBTSTH7WOTG2BIWA}

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	2026-05-17T23:44:10.608135Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b0fb4230c70f5a19ca67fd9d336828b0219e780bb07cbbe3778d16fb9698ac7b

Aliases

arxiv: 0901.4417 · arxiv_version: 0901.4417v4 · doi: 10.48550/arxiv.0901.4417 · pith_short_12: WD5UEMGHB5NB · pith_short_16: WD5UEMGHB5NBTSTH · pith_short_8: WD5UEMGH

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/WD5UEMGHB5NBTSTH7WOTG2BIWA \
  | 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: b0fb4230c70f5a19ca67fd9d336828b0219e780bb07cbbe3778d16fb9698ac7b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3edd6e94adaf362078f0f7bb15b448b18488e10a73b2abba0a1b7e574226f2b3",
    "cross_cats_sorted": [
      "cs.DM",
      "cs.MS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2009-01-28T09:09:36Z",
    "title_canon_sha256": "51249de83ae07825d45e6615b66868d1a1ac575f735142c06a288c266ece36fd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0901.4417",
    "kind": "arxiv",
    "version": 4
  }
}