Pith Number

pith:6Y4UWK5Z

pith:2013:6Y4UWK5ZZ62D5F6HBNFY6QFAIZ

not attested not anchored not stored refs pending

Semiovals in PG(2,8) and PG(2,9)

Daniele Bartoli, Fernanda Pambianco, Stefano Marcugini

arxiv:1312.2485 v1 · 2013-11-21 · 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{6Y4UWK5ZZ62D5F6HBNFY6QFAIZ}

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	2026-05-18T03:05:10.197347Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f6394b2bb9cfb43e97c70b4b8f40a04661eb4e4b43437ee2e7581d94d9736997

Aliases

arxiv: 1312.2485 · arxiv_version: 1312.2485v1 · doi: 10.48550/arxiv.1312.2485 · pith_short_12: 6Y4UWK5ZZ62D · pith_short_16: 6Y4UWK5ZZ62D5F6H · pith_short_8: 6Y4UWK5Z

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/6Y4UWK5ZZ62D5F6HBNFY6QFAIZ \
  | 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: f6394b2bb9cfb43e97c70b4b8f40a04661eb4e4b43437ee2e7581d94d9736997

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b0774bbe0260b304f43844dfee0b5eb609be44abe148ae79939ed578edebe358",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2013-11-21T17:11:39Z",
    "title_canon_sha256": "558855a203e7e1e4edd3129fce468516cd206bb61a7a0bcac832e016bbd5f08b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1312.2485",
    "kind": "arxiv",
    "version": 1
  }
}