Pith Number

pith:BBICJMDB

pith:2010:BBICJMDBDHZMRMLM2SL2JUQFHP

not attested not anchored not stored refs pending

On the Hadwiger numbers of starlike disks

Zsolt Langi

arxiv:1002.3918 v3 · 2010-02-20 · math.MG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BBICJMDBDHZMRMLM2SL2JUQFHP}

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	2026-05-18T04:21:30.029414Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

085024b06119f2c8b16cd497a4d2053bd5525f7d831acce52cf57b86ad4a9db5

Aliases

arxiv: 1002.3918 · arxiv_version: 1002.3918v3 · doi: 10.48550/arxiv.1002.3918 · pith_short_12: BBICJMDBDHZM · pith_short_16: BBICJMDBDHZMRMLM · pith_short_8: BBICJMDB

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/BBICJMDBDHZMRMLM2SL2JUQFHP \
  | 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: 085024b06119f2c8b16cd497a4d2053bd5525f7d831acce52cf57b86ad4a9db5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7c021cf1472337f7c6345a2e1c9ee80d1176cdc7388866e7daa0457dc36b8fd6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.MG",
    "submitted_at": "2010-02-20T17:17:56Z",
    "title_canon_sha256": "a7437553fbc3d8dfd29b65ac8a60a0849278990ca3b502c60e987cdd9e062706"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1002.3918",
    "kind": "arxiv",
    "version": 3
  }
}