Pith Number

pith:E7K25S4X

pith:2010:E7K25S4XTMV2Q56TMGSEEKOHHU

not attested not anchored not stored refs pending

A characterization of Q-polynomial association schemes

Hiroshi Nozaki, Hirotake Kurihara

arxiv:1007.0473 v2 · 2010-07-03 · 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{E7K25S4XTMV2Q56TMGSEEKOHHU}

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	2026-05-18T04:20:13.165960Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

27d5aecb979b2ba877d361a44229c73d10230b5730be1ca3fff5209f587fcd4a

Aliases

arxiv: 1007.0473 · arxiv_version: 1007.0473v2 · doi: 10.48550/arxiv.1007.0473 · pith_short_12: E7K25S4XTMV2 · pith_short_16: E7K25S4XTMV2Q56T · pith_short_8: E7K25S4X

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/E7K25S4XTMV2Q56TMGSEEKOHHU \
  | 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: 27d5aecb979b2ba877d361a44229c73d10230b5730be1ca3fff5209f587fcd4a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c44ce63f5badf5d91e8579e7ccec304a0798c83ee463b29b5ff854ea4693372d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2010-07-03T07:00:17Z",
    "title_canon_sha256": "ea04d063d23a2672bde278bcbe372efe5bc6d7263c3c07a6083eb22206a93583"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1007.0473",
    "kind": "arxiv",
    "version": 2
  }
}