Pith Number

pith:WSUUPWEE

pith:2013:WSUUPWEE2UGNJOT46UNYIKYZCU

not attested not anchored not stored refs pending

SEFE with No Mapping via Large Induced Outerplane Graphs in Plane Graphs

Fabrizio Frati, Joachim Gudmundsson, Patrizio Angelini, William Evans

arxiv:1309.4713 v1 · 2013-09-18 · cs.DS · cs.DM · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WSUUPWEE2UGNJOT46UNYIKYZCU}

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	2026-05-18T03:12:58.497641Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b4a947d884d50cd4ba7cf51b842b191536c9303bf8abc2d6f4c77bc96babc92e

Aliases

arxiv: 1309.4713 · arxiv_version: 1309.4713v1 · doi: 10.48550/arxiv.1309.4713 · pith_short_12: WSUUPWEE2UGN · pith_short_16: WSUUPWEE2UGNJOT4 · pith_short_8: WSUUPWEE

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/WSUUPWEE2UGNJOT46UNYIKYZCU \
  | 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: b4a947d884d50cd4ba7cf51b842b191536c9303bf8abc2d6f4c77bc96babc92e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d3129c70abb6e48e9fb934005094099904a5e70663cd7ab5b17bf6c85e455a9d",
    "cross_cats_sorted": [
      "cs.DM",
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2013-09-18T17:22:52Z",
    "title_canon_sha256": "02206374457b530820a1b6d4c1a63709c37a8f1537e11d2bacd17f36c61315e3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1309.4713",
    "kind": "arxiv",
    "version": 1
  }
}