Pith Number

pith:ZLPQFHS4

pith:2015:ZLPQFHS46GWOS3677IZZV37G3S

not attested not anchored not stored refs pending

Constructing minimal blocking sets using field reduction

Geertrui Van de Voorde

arxiv:1512.04822 v1 · 2015-12-15 · 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{ZLPQFHS46GWOS3677IZZV37G3S}

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	2026-05-18T01:24:15.379403Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cadf029e5cf1ace96fdffa339aefe6dc9222e9f3114b8216b3cb5c71a4ca79dd

Aliases

arxiv: 1512.04822 · arxiv_version: 1512.04822v1 · doi: 10.48550/arxiv.1512.04822 · pith_short_12: ZLPQFHS46GWO · pith_short_16: ZLPQFHS46GWOS367 · pith_short_8: ZLPQFHS4

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/ZLPQFHS46GWOS3677IZZV37G3S \
  | 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: cadf029e5cf1ace96fdffa339aefe6dc9222e9f3114b8216b3cb5c71a4ca79dd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "94cb2608a9fa5d472d2ea7b03621cbee5ee07e0ec976243b331e4a2c49ba1a25",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2015-12-15T15:44:21Z",
    "title_canon_sha256": "ca5a7562a8e5d35e2bf67d5eb55b838766b688d70d04f880942010016e65ea0f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1512.04822",
    "kind": "arxiv",
    "version": 1
  }
}