Pith Number

pith:UQSGZXBJ

pith:2018:UQSGZXBJIQ67AYFS246VGFOPJE

not attested not anchored not stored refs pending

A PTAS for vertex guarding weakly-visible polygons - An extended abstract

Matthew J. Katz

arxiv:1803.02160 v2 · 2018-03-06 · 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{UQSGZXBJIQ67AYFS246VGFOPJE}

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.

Cited by

1 paper in Pith

A Constant-Factor Approximation Algorithm for Vertex Guarding a WV-Polygon

Receipt and verification

First computed	2026-05-18T00:04:30.244958Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a4246cdc29443df060b2d73d5315cf491a86b3bbfabf442d9112b6c950b992bb

Aliases

arxiv: 1803.02160 · arxiv_version: 1803.02160v2 · doi: 10.48550/arxiv.1803.02160 · pith_short_12: UQSGZXBJIQ67 · pith_short_16: UQSGZXBJIQ67AYFS · pith_short_8: UQSGZXBJ

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/UQSGZXBJIQ67AYFS246VGFOPJE \
  | 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: a4246cdc29443df060b2d73d5315cf491a86b3bbfabf442d9112b6c950b992bb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8221a191df540f8c3d2dcd171711b147384e87bcb59df66489be3d5bbfb5c039",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CG",
    "submitted_at": "2018-03-06T13:25:30Z",
    "title_canon_sha256": "e50a4a8046289e936c8c69781ec51b2308541c89114d8520ac2e60e2e5881330"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.02160",
    "kind": "arxiv",
    "version": 2
  }
}