Pith Number

pith:TGRT65ES

pith:2009:TGRT65ESM6VMGRKIHKPXOP43LJ

not attested not anchored not stored refs pending

(Meta) Kernelization

Daniel Lokshtanov, Dimitrios M. Thilikos, Eelko Penninkx, Fedor V. Fomin, Hans L. Bodlaender, Saket Saurabh

arxiv:0904.0727 v3 · 2009-04-04 · cs.DM · 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{TGRT65ESM6VMGRKIHKPXOP43LJ}

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	2026-05-18T03:12:23.042502Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

99a33f749267aac345483a9f773f9b5a70c1620aeaaed8a219b9efd9f5bddf0b

Aliases

arxiv: 0904.0727 · arxiv_version: 0904.0727v3 · doi: 10.48550/arxiv.0904.0727 · pith_short_12: TGRT65ESM6VM · pith_short_16: TGRT65ESM6VMGRKI · pith_short_8: TGRT65ES

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/TGRT65ESM6VMGRKIHKPXOP43LJ \
  | 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: 99a33f749267aac345483a9f773f9b5a70c1620aeaaed8a219b9efd9f5bddf0b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ed705e9189f89c13327c50aa5efaf66ef83fac456daaea436366859e050c3501",
    "cross_cats_sorted": [
      "cs.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2009-04-04T16:11:07Z",
    "title_canon_sha256": "c1124fe9242bab0759a4e36cf6bbab5b9656858c465d05f08c89a99a423fffd1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.0727",
    "kind": "arxiv",
    "version": 3
  }
}