Pith Number

pith:H6I5IUBN

pith:2012:H6I5IUBNTO3V7WTUZPBVC3FHHS

not attested not anchored not stored refs pending

The fine triangle intersections for maximum kite packings

Guizhi Zhang, Tao Feng, Yanxun Chang

arxiv:1207.3931 v1 · 2012-07-17 · 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{H6I5IUBNTO3V7WTUZPBVC3FHHS}

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	2026-05-18T03:50:49.483209Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3f91d4502d9bb75fda74cbc3516ca73c977a531d82cd8735fbb91b4edb800563

Aliases

arxiv: 1207.3931 · arxiv_version: 1207.3931v1 · doi: 10.48550/arxiv.1207.3931 · pith_short_12: H6I5IUBNTO3V · pith_short_16: H6I5IUBNTO3V7WTU · pith_short_8: H6I5IUBN

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/H6I5IUBNTO3V7WTUZPBVC3FHHS \
  | 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: 3f91d4502d9bb75fda74cbc3516ca73c977a531d82cd8735fbb91b4edb800563

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "085706965eab92de6f21cce667c55acd1ef698c4f3a3801f9b238c5b8b59e077",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-sa/3.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2012-07-17T10:03:34Z",
    "title_canon_sha256": "fd844fc275d99a9b7c3622250d03199c094ca1b86b7454323d1af33db64119dd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1207.3931",
    "kind": "arxiv",
    "version": 1
  }
}