Pith Number

pith:T7FOOGHZ

pith:2025:T7FOOGHZGUOBMF6OIDILRIO4DD

not attested not anchored not stored refs pending

Largest-Area Convex Quadrilateral in a $1.5$D Terrain

Ankush Acharyya, Nandana Ghosh

arxiv:2511.13209 v3 · 2025-11-17 · 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{T7FOOGHZGUOBMF6OIDILRIO4DD}

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	2026-06-19T16:11:16.484777Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9fcae718f9351c1617ce40d0b8a1dc18e69cbc4cb4f343fb921c8d5aba38e69d

Aliases

arxiv: 2511.13209 · arxiv_version: 2511.13209v3 · doi: 10.48550/arxiv.2511.13209 · pith_short_12: T7FOOGHZGUOB · pith_short_16: T7FOOGHZGUOBMF6O · pith_short_8: T7FOOGHZ

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/T7FOOGHZGUOBMF6OIDILRIO4DD \
  | 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: 9fcae718f9351c1617ce40d0b8a1dc18e69cbc4cb4f343fb921c8d5aba38e69d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8a0e45439ccce83634f4bcae21cdda53c155f18a07cee1926b52472ac128f2b3",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CG",
    "submitted_at": "2025-11-17T10:22:53Z",
    "title_canon_sha256": "7cfdf6f7796f86a3bb1d1a7000c9bcbe7f86cfcf0897fe5f861d3f7f8bc331a9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2511.13209",
    "kind": "arxiv",
    "version": 3
  }
}