Pith Number

pith:YMFO54DV

pith:2016:YMFO54DVFHR7RVGQI4XXNR35UA

not attested not anchored not stored refs pending

An improved Constant-Factor Approximation Algorithm for Planar Visibility Counting Problem

Amir Jafari, Mohammad Ghodsi, Sharareh Alipour

arxiv:1605.03542 v1 · 2016-05-11 · 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{YMFO54DVFHR7RVGQI4XXNR35UA}

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	2026-05-18T01:15:01.161285Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c30aeef07529e3f8d4d0472f76c77da02920a8fd1d28fae32f7639504d18bac7

Aliases

arxiv: 1605.03542 · arxiv_version: 1605.03542v1 · doi: 10.48550/arxiv.1605.03542 · pith_short_12: YMFO54DVFHR7 · pith_short_16: YMFO54DVFHR7RVGQ · pith_short_8: YMFO54DV

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/YMFO54DVFHR7RVGQI4XXNR35UA \
  | 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: c30aeef07529e3f8d4d0472f76c77da02920a8fd1d28fae32f7639504d18bac7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "45b1820719b187931caabb94c913d833ccb557c5d4f8ada55a490ffc8ab183a2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CG",
    "submitted_at": "2016-05-11T18:40:58Z",
    "title_canon_sha256": "f798caa86a601831d63e28f9d57045940cbf6956c771223e2c0429abfd04be58"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1605.03542",
    "kind": "arxiv",
    "version": 1
  }
}