Pith Number

pith:TQGH5U5L

pith:2008:TQGH5U5L3EBXK5PAINNPL7RIFI

not attested not anchored not stored refs pending

Pseudocyclic association schemes and strongly regular graphs

Akihiro Munemasa, Takuya Ikuta

arxiv:0808.3676 v3 · 2008-08-27 · 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{TQGH5U5L3EBXK5PAINNPL7RIFI}

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	2026-05-18T00:32:31.882522Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9c0c7ed3abd9037575e0435af5fe282a38becac8d1bd73078c5f76d994535db2

Aliases

arxiv: 0808.3676 · arxiv_version: 0808.3676v3 · doi: 10.48550/arxiv.0808.3676 · pith_short_12: TQGH5U5L3EBX · pith_short_16: TQGH5U5L3EBXK5PA · pith_short_8: TQGH5U5L

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/TQGH5U5L3EBXK5PAINNPL7RIFI \
  | 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: 9c0c7ed3abd9037575e0435af5fe282a38becac8d1bd73078c5f76d994535db2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "99f027c920004ce03743c767da45be15bde9a480ec37d7c9d13daf304cb34ade",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2008-08-27T11:09:03Z",
    "title_canon_sha256": "aa4285aeb04468a43816c7f19a2810f10e51e912edc9bb6b97f6106e8130e239"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0808.3676",
    "kind": "arxiv",
    "version": 3
  }
}