Pith Number

pith:WTHHVRQZ

pith:2010:WTHHVRQZ36O4HB7QZ4ODRFMTCO

not attested not anchored not stored refs pending

On the polygonal diameter of the interior, resp. exterior, of a simple closed polygon in the plane

Horst Martini, Micha A. Perles, Yaakov S. Kupitz

arxiv:1012.3541 v1 · 2010-12-16 · math.CO

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WTHHVRQZ36O4HB7QZ4ODRFMTCO}

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	2026-05-18T04:33:06.365397Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b4ce7ac619df9dc387f0cf1c3895931388d8a628ba2e25d8ceabbae81a5bec0a

Aliases

arxiv: 1012.3541 · arxiv_version: 1012.3541v1 · doi: 10.48550/arxiv.1012.3541 · pith_short_12: WTHHVRQZ36O4 · pith_short_16: WTHHVRQZ36O4HB7Q · pith_short_8: WTHHVRQZ

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/WTHHVRQZ36O4HB7QZ4ODRFMTCO \
  | 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: b4ce7ac619df9dc387f0cf1c3895931388d8a628ba2e25d8ceabbae81a5bec0a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ea88f770345962d6ff284164cc066bf73befa0365a34d9ab75e87565446deb93",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/3.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2010-12-16T09:34:36Z",
    "title_canon_sha256": "5a4eb38ac3b46eb179d7c709932fbfbe27f99d3ebf388c7231c5b4080a9b7b00"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1012.3541",
    "kind": "arxiv",
    "version": 1
  }
}