Pith Number

pith:L4FTXUO2

pith:2013:L4FTXUO2LVF75EB5VV7YKLDNXO

not attested not anchored not stored refs pending

Minimum Bisection is fixed parameter tractable

Daniel Lokshtanov, Marcin Pilipczuk, Marek Cygan, Micha{\l} Pilipczuk, Saket Saurabh

arxiv:1311.2563 v2 · 2013-11-11 · 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.

Receipt and verification

First computed	2026-05-18T02:56:11.305979Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5f0b3bd1da5d4bfe903dad7f852c6dbb830987ab9b6427a26636301be91d860d

Aliases

arxiv: 1311.2563 · arxiv_version: 1311.2563v2 · doi: 10.48550/arxiv.1311.2563 · pith_short_12: L4FTXUO2LVF7 · pith_short_16: L4FTXUO2LVF75EB5 · pith_short_8: L4FTXUO2

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/L4FTXUO2LVF75EB5VV7YKLDNXO \
  | 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: 5f0b3bd1da5d4bfe903dad7f852c6dbb830987ab9b6427a26636301be91d860d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7e490849e1dacb2c9f54a799f565a0cdb08aa87bf8dcc4133840d0b528091e29",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2013-11-11T20:21:32Z",
    "title_canon_sha256": "f7835ffccbe3c23b6eb8ffb37737b42fab5fc1496814a8ed320eaa19d7d1cb01"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1311.2563",
    "kind": "arxiv",
    "version": 2
  }
}