Pith Number

pith:FV5SKZRX

pith:2011:FV5SKZRXBIP5UFBFG2W6FWFZK4

not attested not anchored not stored refs pending

Subexponential fixed-parameter tractability of cluster editing

Fedor V. Fomin, Marcin Pilipczuk, Micha{\l} Pilipczuk, Stefan Kratsch, Yngve Villanger

arxiv:1112.4419 v4 · 2011-12-19 · cs.CC · cs.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FV5SKZRXBIP5UFBFG2W6FWFZK4}

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	2026-05-18T02:21:27.104916Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2d7b2566370a1fda142536ade2d8b9570c133c0352d838a7e8e4c6a026f08c00

Aliases

arxiv: 1112.4419 · arxiv_version: 1112.4419v4 · doi: 10.48550/arxiv.1112.4419 · pith_short_12: FV5SKZRXBIP5 · pith_short_16: FV5SKZRXBIP5UFBF · pith_short_8: FV5SKZRX

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/FV5SKZRXBIP5UFBFG2W6FWFZK4 \
  | 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: 2d7b2566370a1fda142536ade2d8b9570c133c0352d838a7e8e4c6a026f08c00

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "59bd8d2804dbad3d441c95fdadd84781ade433f76813b5da57de65492c41ef78",
    "cross_cats_sorted": [
      "cs.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2011-12-19T17:43:36Z",
    "title_canon_sha256": "2dd93d61305857c4b78ac1425567ebcd79ba8ed4745ed4eedb2db2abeadace0b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1112.4419",
    "kind": "arxiv",
    "version": 4
  }
}