Pith Number

pith:HOFLUYD7

pith:2009:HOFLUYD725YLCVYVAUVZDEYH73

not attested not anchored not stored refs pending

Entropy, Triangulation, and Point Location in Planar Subdivisions

John Iacono, Pat Morin, Sebastien Collette, Stefan Langerman, Vida Dujmovic

arxiv:0901.1908 v1 · 2009-01-13 · cs.CG · cs.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HOFLUYD725YLCVYVAUVZDEYH73}

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	2026-05-18T03:31:31.258520Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3b8aba607fd770b15715052b919307fee4096cca658c5c97c2b7010d56262ad9

Aliases

arxiv: 0901.1908 · arxiv_version: 0901.1908v1 · doi: 10.48550/arxiv.0901.1908 · pith_short_12: HOFLUYD725YL · pith_short_16: HOFLUYD725YLCVYV · pith_short_8: HOFLUYD7

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/HOFLUYD725YLCVYVAUVZDEYH73 \
  | 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: 3b8aba607fd770b15715052b919307fee4096cca658c5c97c2b7010d56262ad9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "26c2e8dd6ffc9122d49f3f38a3da8ebdc94d11e5937c675eca38182a645b3778",
    "cross_cats_sorted": [
      "cs.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CG",
    "submitted_at": "2009-01-13T23:39:46Z",
    "title_canon_sha256": "32a8a6ad03c603a4a18ed44deebd96997937f08c597a6aa5c54a73d49a2abb55"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0901.1908",
    "kind": "arxiv",
    "version": 1
  }
}