Pith Number

pith:SYOYC3IV

pith:2014:SYOYC3IVPRPP6PC4SBQWS32MG4

not attested not anchored not stored refs pending

Hitting forbidden subgraphs in graphs of bounded treewidth

D\'aniel Marx, Marcin Pilipczuk, Marek Cygan, Micha{\l} Pilipczuk

arxiv:1411.4184 v1 · 2014-11-15 · cs.DS · cs.CC

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

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	2026-05-18T02:35:46.306307Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

961d816d157c5eff3c5c9061696f4c37082d1eaada18035e39011d0779df570a

Aliases

arxiv: 1411.4184 · arxiv_version: 1411.4184v1 · doi: 10.48550/arxiv.1411.4184 · pith_short_12: SYOYC3IVPRPP · pith_short_16: SYOYC3IVPRPP6PC4 · pith_short_8: SYOYC3IV

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/SYOYC3IVPRPP6PC4SBQWS32MG4 \
  | 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: 961d816d157c5eff3c5c9061696f4c37082d1eaada18035e39011d0779df570a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "73176eccb0b7279a1d8a65787e82f3299d0aec37b2615cd2d71d2af07afbcd3b",
    "cross_cats_sorted": [
      "cs.CC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2014-11-15T20:47:20Z",
    "title_canon_sha256": "75cd6b894733634f21cf1d22f9e43a755e4ab02fa43751ad56039c9c40b9fa96"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1411.4184",
    "kind": "arxiv",
    "version": 1
  }
}