Pith Number

pith:PUR4KH4O

pith:2013:PUR4KH4OT2LRBXD3QWOVWLBNEB

not attested not anchored not stored refs pending

Weak Visibility Queries of Line Segments in Simple Polygons and Polygonal Domains

Mohammad Ghodsi, Mojtaba Nouri Bygi

arxiv:1310.7197 v1 · 2013-10-27 · 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{PUR4KH4OT2LRBXD3QWOVWLBNEB}

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	2026-05-18T03:08:45.977523Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7d23c51f8e9e9710dc7b859d5b2c2d20547dfb319e5e3203e7b3eb90546e8bca

Aliases

arxiv: 1310.7197 · arxiv_version: 1310.7197v1 · doi: 10.48550/arxiv.1310.7197 · pith_short_12: PUR4KH4OT2LR · pith_short_16: PUR4KH4OT2LRBXD3 · pith_short_8: PUR4KH4O

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/PUR4KH4OT2LRBXD3QWOVWLBNEB \
  | 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: 7d23c51f8e9e9710dc7b859d5b2c2d20547dfb319e5e3203e7b3eb90546e8bca

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "352053a72b16710ca62235818505dd5b6419224772f42856bdb1d79b0e15c146",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CG",
    "submitted_at": "2013-10-27T14:10:05Z",
    "title_canon_sha256": "02226364c0a0260b2c4feb5b6b49e05f358321c4f4bd8dbaf5d20bfc80cf540f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1310.7197",
    "kind": "arxiv",
    "version": 1
  }
}