Pith Number

pith:PLGJG3ZQ

pith:2018:PLGJG3ZQLKLJZ3FLJZ5TQOQ7GM

not attested not anchored not stored refs pending

A new lower bound for the size of an affine blocking set

Geertrui Van de Voorde, Maarten De Boeck

arxiv:1804.09511 v1 · 2018-04-25 · 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{PLGJG3ZQLKLJZ3FLJZ5TQOQ7GM}

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	2026-05-18T00:17:31.578574Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7acc936f305a969cecab4e7b383a1f33383ae0b626e1b3685a66303e6b2495c3

Aliases

arxiv: 1804.09511 · arxiv_version: 1804.09511v1 · doi: 10.48550/arxiv.1804.09511 · pith_short_12: PLGJG3ZQLKLJ · pith_short_16: PLGJG3ZQLKLJZ3FL · pith_short_8: PLGJG3ZQ

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/PLGJG3ZQLKLJZ3FLJZ5TQOQ7GM \
  | 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: 7acc936f305a969cecab4e7b383a1f33383ae0b626e1b3685a66303e6b2495c3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7679a57338c4ff24cfd27a32f53f2536d4a43ed94363410d6b71e7104e8c77b6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2018-04-25T12:20:57Z",
    "title_canon_sha256": "a5ce2d34d8dd55036cd7c39424b0196548dcc384d4bdfe4cc4682d8567fcc763"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.09511",
    "kind": "arxiv",
    "version": 1
  }
}