Pith Number

pith:IQ6O2RQJ

pith:2015:IQ6O2RQJIKOSVT5FAHOYTCZGU7

not attested not anchored not stored refs pending

Fixed parameter complexity of distance constrained labeling and uniform channel assignment problems

Du\v{s}an Knop, Jan Kratochv\'il, Ji\v{r}\'i Fiala, Martin Kouteck\'y, Tom\'a\v{s} Gaven\v{c}iak

arxiv:1507.00640 v2 · 2015-07-02 · 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{IQ6O2RQJIKOSVT5FAHOYTCZGU7}

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	2026-05-18T01:25:24.451295Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

443ced4609429d2acfa501dd898b26a7ef3bbca4ab7310ffbbfdcc5d8b39fa2b

Aliases

arxiv: 1507.00640 · arxiv_version: 1507.00640v2 · doi: 10.48550/arxiv.1507.00640 · pith_short_12: IQ6O2RQJIKOS · pith_short_16: IQ6O2RQJIKOSVT5F · pith_short_8: IQ6O2RQJ

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/IQ6O2RQJIKOSVT5FAHOYTCZGU7 \
  | 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: 443ced4609429d2acfa501dd898b26a7ef3bbca4ab7310ffbbfdcc5d8b39fa2b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ef7eebf698c3c89870fd6f62c60701f32cf26ef9e7e7107be430fbdc8a6fd619",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2015-07-02T15:59:27Z",
    "title_canon_sha256": "2ee2f4cbf5f485b1d43cd57c7561009fda2087c50e75aa8193557c17ad9667d9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1507.00640",
    "kind": "arxiv",
    "version": 2
  }
}