Pith Number

pith:NWN7JCRR

pith:2014:NWN7JCRRBVBK6D4QOB7HVHHCOE

not attested not anchored not stored refs pending

A Faster Algorithm for Computing Straight Skeletons

Antoine Vigneron, Liam Mencel, Siu-Wing Cheng

arxiv:1405.4691 v2 · 2014-05-19 · 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{NWN7JCRRBVBK6D4QOB7HVHHCOE}

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	2026-05-18T02:47:43.797344Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6d9bf48a310d42af0f90707e7a9ce27129fdde82b228ad239fbbbd6dab06c4c7

Aliases

arxiv: 1405.4691 · arxiv_version: 1405.4691v2 · doi: 10.48550/arxiv.1405.4691 · pith_short_12: NWN7JCRRBVBK · pith_short_16: NWN7JCRRBVBK6D4Q · pith_short_8: NWN7JCRR

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/NWN7JCRRBVBK6D4QOB7HVHHCOE \
  | 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: 6d9bf48a310d42af0f90707e7a9ce27129fdde82b228ad239fbbbd6dab06c4c7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9dee57ae19a3898c599e3f37e32b6c40a544aefeb33a06ca3f3ba2d84bdbd746",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CG",
    "submitted_at": "2014-05-19T12:14:43Z",
    "title_canon_sha256": "6b85103d63f88d44f2cf781ce54391692ec452154df2e4b22628e71f48dddbbb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1405.4691",
    "kind": "arxiv",
    "version": 2
  }
}