Pith Number

pith:CJIO7RMA

pith:2015:CJIO7RMAXOOGC7PQWDEDJVHJLP

not attested not anchored not stored refs pending

Guarding the Vertices of an Orthogonal Terrain using Vertex Guards

Saeed Mehrabi

arxiv:1512.08292 v1 · 2015-12-28 · 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{CJIO7RMAXOOGC7PQWDEDJVHJLP}

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	2026-05-18T01:23:42.683025Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1250efc580bb9c617df0b0c834d4e95bddfbdafc1640d0502147070109227818

Aliases

arxiv: 1512.08292 · arxiv_version: 1512.08292v1 · doi: 10.48550/arxiv.1512.08292 · pith_short_12: CJIO7RMAXOOG · pith_short_16: CJIO7RMAXOOGC7PQ · pith_short_8: CJIO7RMA

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/CJIO7RMAXOOGC7PQWDEDJVHJLP \
  | 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: 1250efc580bb9c617df0b0c834d4e95bddfbdafc1640d0502147070109227818

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1cc4fc564a2a715faeb429ddc9bfc5803f580b03165be2f67e289f6fef68e00a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CG",
    "submitted_at": "2015-12-28T00:01:52Z",
    "title_canon_sha256": "d49c874fb40cf7a28cadf74e7c118aff5517e72827a3bd7501db98e5128a130c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1512.08292",
    "kind": "arxiv",
    "version": 1
  }
}