Pith Number

pith:DOV7PLID

pith:2019:DOV7PLIDLGKBWXLZ5LPX5XU337

not attested not anchored not stored refs pending

Non-bipartite distance-regular graphs with a small smallest eigenvalue

Jack Koolen, Yifan Jing, Zhi Qiao

arxiv:1901.01157 v1 · 2019-01-03 · 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{DOV7PLIDLGKBWXLZ5LPX5XU337}

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	2026-05-17T23:56:56.883393Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1babf7ad0359941b5d79eadf7ede9bdfedd37d0759741b1c47093788978db8c8

Aliases

arxiv: 1901.01157 · arxiv_version: 1901.01157v1 · doi: 10.48550/arxiv.1901.01157 · pith_short_12: DOV7PLIDLGKB · pith_short_16: DOV7PLIDLGKBWXLZ · pith_short_8: DOV7PLID

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/DOV7PLIDLGKBWXLZ5LPX5XU337 \
  | 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: 1babf7ad0359941b5d79eadf7ede9bdfedd37d0759741b1c47093788978db8c8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5d613373dab48ccead0d42f24f786ad07327dcfddae686f2e8f39868288e0383",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2019-01-03T06:45:43Z",
    "title_canon_sha256": "9e78f78eff4537087e8a2fc638d45ceca50462720b78dda7b032cb54b4262722"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.01157",
    "kind": "arxiv",
    "version": 1
  }
}