Pith Number

pith:S2THZY32

pith:2012:S2THZY32OGCUT3ZUADWJCNNULQ

not attested not anchored not stored refs pending

Fixed-parameter tractability of multicut in directed acyclic graphs

Magnus Wahlstr\"om, Marcin Pilipczuk, Micha{\l} Pilipczuk, Stefan Kratsch

arxiv:1202.5749 v1 · 2012-02-26 · 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	2026-05-18T04:01:24.774806Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

96a67ce37a718549ef3400ec9135b45c17f1a1f72ff89f18d0aa6f6db97b853b

Aliases

arxiv: 1202.5749 · arxiv_version: 1202.5749v1 · doi: 10.48550/arxiv.1202.5749 · pith_short_12: S2THZY32OGCU · pith_short_16: S2THZY32OGCUT3ZU · pith_short_8: S2THZY32

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/S2THZY32OGCUT3ZUADWJCNNULQ \
  | 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: 96a67ce37a718549ef3400ec9135b45c17f1a1f72ff89f18d0aa6f6db97b853b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dc3acf4e1cc2b74c665a003873d1e3b71922a214f8a100d71eb5441260ebe260",
    "cross_cats_sorted": [
      "cs.CC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2012-02-26T12:16:44Z",
    "title_canon_sha256": "48fd00c692ae039b285b25c20df2a4e1e0dbf7ae214a56b619b9ef42ba29c751"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1202.5749",
    "kind": "arxiv",
    "version": 1
  }
}