Pith Number

pith:YP2WRCSH

pith:2013:YP2WRCSHCIWHALXOOI73CVOOKA

not attested not anchored not stored refs pending

Convex Polygons are Self-Coverable

Bal\'azs Keszegh, D\"om\"ot\"or P\'alv\"olgyi

arxiv:1307.2411 v2 · 2013-07-09 · math.MG · cs.CG · cs.DM · 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{YP2WRCSHCIWHALXOOI73CVOOKA}

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	2026-05-18T02:56:21.200967Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c3f5688a47122c702eee723fb155ce5028903ed401f9077b7737b5e526187615

Aliases

arxiv: 1307.2411 · arxiv_version: 1307.2411v2 · doi: 10.48550/arxiv.1307.2411 · pith_short_12: YP2WRCSHCIWH · pith_short_16: YP2WRCSHCIWHALXO · pith_short_8: YP2WRCSH

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/YP2WRCSHCIWHALXOOI73CVOOKA \
  | 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: c3f5688a47122c702eee723fb155ce5028903ed401f9077b7737b5e526187615

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5fd2ce2bc7e3e295a02b19c717e1466dc60b3ae3d652266fea97dbdaf8363267",
    "cross_cats_sorted": [
      "cs.CG",
      "cs.DM",
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.MG",
    "submitted_at": "2013-07-09T11:52:32Z",
    "title_canon_sha256": "409e013a2a1b4039355cc3c67127585fe5e557f6cb48d0936b049aa8b0420c91"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.2411",
    "kind": "arxiv",
    "version": 2
  }
}