Pith Number

pith:KADW3PED

pith:2013:KADW3PEDYFPZRLEYJZFSNQAU6B

not attested not anchored not stored refs pending

Semantic Word Cloud Representations: Hardness and Approximation Algorithms

Alexander Wolff, Anna Lubiw, Claudio Squarcella, Lukas Barth, Martin N\"ollenburg, Sara Irina Fabrikant, Sergey Pupyrev, Stephen Kobourov, Torsten Ueckerdt, Yoshio Okamoto

arxiv:1311.4778 v1 · 2013-11-19 · cs.CG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{KADW3PEDYFPZRLEYJZFSNQAU6B}

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	2026-05-18T03:06:43.513764Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

50076dbc83c15f98ac984e4b26c014f055bd4f579e952cf7396ed1eed962af77

Aliases

arxiv: 1311.4778 · arxiv_version: 1311.4778v1 · doi: 10.48550/arxiv.1311.4778 · pith_short_12: KADW3PEDYFPZ · pith_short_16: KADW3PEDYFPZRLEY · pith_short_8: KADW3PED

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/KADW3PEDYFPZRLEYJZFSNQAU6B \
  | 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: 50076dbc83c15f98ac984e4b26c014f055bd4f579e952cf7396ed1eed962af77

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ad0556700e17bda46207834bbd2df2f4d88d9dffea0afccb4d61e338394e1cd5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CG",
    "submitted_at": "2013-11-19T15:21:29Z",
    "title_canon_sha256": "6c4635c73e091d3bd3078bb2f71be7a012117faf017bea0841d525a249734c0f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1311.4778",
    "kind": "arxiv",
    "version": 1
  }
}