Pith Number

pith:DSFJJTZN

pith:2018:DSFJJTZNSFCOI7UNONLIVJLZNT

not attested not anchored not stored refs pending

A New Optimal Algorithm for Computing the Visibility Area of a simple Polygon from a Viewpoint

Alireza Bagheri, Hamid Hoorfar

arxiv:1803.10184 v3 · 2018-03-27 · cs.CG · cs.CC · 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{DSFJJTZNSFCOI7UNONLIVJLZNT}

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	2026-05-18T00:19:10.973119Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1c8a94cf2d9144e47e8d73568aa5796cd044289b8765c6f1ee760749ac86c947

Aliases

arxiv: 1803.10184 · arxiv_version: 1803.10184v3 · doi: 10.48550/arxiv.1803.10184 · pith_short_12: DSFJJTZNSFCO · pith_short_16: DSFJJTZNSFCOI7UN · pith_short_8: DSFJJTZN

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/DSFJJTZNSFCOI7UNONLIVJLZNT \
  | 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: 1c8a94cf2d9144e47e8d73568aa5796cd044289b8765c6f1ee760749ac86c947

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a6d8a41287d99c9cf3c4e8f96fe4207c6169d52e1a40aec6c09bb99e2c0e1fd2",
    "cross_cats_sorted": [
      "cs.CC",
      "cs.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CG",
    "submitted_at": "2018-03-27T17:07:26Z",
    "title_canon_sha256": "e1c18e0ccdaf4c8d8915631aff124c4cdbfb4b80e2397691c61531651e22d005"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.10184",
    "kind": "arxiv",
    "version": 3
  }
}