Pith Number

pith:Y2MRQKBE

pith:2012:Y2MRQKBEDSMK4MJDY44ZOTOPC4

not attested not anchored not stored refs pending

Designing FPT algorithms for cut problems using randomized contractions

Marcin Pilipczuk, Marek Cygan, Micha{\l} Pilipczuk, MohammadTaghi Hajiaghayi, Rajesh Chitnis

arxiv:1207.4079 v2 · 2012-07-17 · cs.DS

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.

Cited by

1 paper in Pith

Connectivity-Preserving Important Separators: A Framework for Cut-Uncut Problems

Receipt and verification

First computed	2026-05-18T01:10:55.015790Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c6991828241c98ae3123c739974dcf172ebdee55ee1baef8dd000d108dc3526b

Aliases

arxiv: 1207.4079 · arxiv_version: 1207.4079v2 · doi: 10.48550/arxiv.1207.4079 · pith_short_12: Y2MRQKBEDSMK · pith_short_16: Y2MRQKBEDSMK4MJD · pith_short_8: Y2MRQKBE

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/Y2MRQKBEDSMK4MJDY44ZOTOPC4 \
  | 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: c6991828241c98ae3123c739974dcf172ebdee55ee1baef8dd000d108dc3526b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f8291e8874e6c30030a9bab0daad78fe5926c631210cfd6f5f127b0aea17d242",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2012-07-17T18:24:13Z",
    "title_canon_sha256": "2b097963293b0f1413c840d25309adc97d8d51ec7cc70e9c85978bf39e3c66fd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1207.4079",
    "kind": "arxiv",
    "version": 2
  }
}