Pith Number

pith:QPIEJKGR

pith:2013:QPIEJKGRM7S7DO2RWNWSG77NGP

not attested not anchored not stored refs pending

Parameterized Algorithms for Modular-Width

Jakub Gajarsk\'y, Michael Lampis, Sebastian Ordyniak

arxiv:1308.2858 v2 · 2013-08-13 · cs.DS · cs.CC · cs.DM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QPIEJKGRM7S7DO2RWNWSG77NGP}

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	2026-05-18T03:15:57.077200Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

83d044a8d167e5f1bb51b36d237fed33c735ce61c0850dd30512eee951d77ab7

Aliases

arxiv: 1308.2858 · arxiv_version: 1308.2858v2 · doi: 10.48550/arxiv.1308.2858 · pith_short_12: QPIEJKGRM7S7 · pith_short_16: QPIEJKGRM7S7DO2R · pith_short_8: QPIEJKGR

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/QPIEJKGRM7S7DO2RWNWSG77NGP \
  | 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: 83d044a8d167e5f1bb51b36d237fed33c735ce61c0850dd30512eee951d77ab7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1e30319d31f242515d7080555fd42d5d42e114c63e220b020fd42b32fbe71b28",
    "cross_cats_sorted": [
      "cs.CC",
      "cs.DM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2013-08-13T13:22:02Z",
    "title_canon_sha256": "33cc7e9a94d00e541e9d64f6004a3a4ab5d0a25fece9bc588201d249aa6baf36"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1308.2858",
    "kind": "arxiv",
    "version": 2
  }
}