Pith Number

pith:DGEI7H2H

pith:2013:DGEI7H2HGNBMVLOXAWM4E5HIBW

not attested not anchored not stored refs pending

Disconnecting strongly regular graphs

Jack H. Koolen, Sebastian M. Cioab\u{a}, Weiqiang Li

arxiv:1311.5634 v1 · 2013-11-22 · math.CO · cs.DM

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DGEI7H2HGNBMVLOXAWM4E5HIBW}

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	2026-05-18T03:06:23.674800Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

19888f9f473342caadd70599c274e80d84334f37462ce95f4a3a4ed77238816b

Aliases

arxiv: 1311.5634 · arxiv_version: 1311.5634v1 · doi: 10.48550/arxiv.1311.5634 · pith_short_12: DGEI7H2HGNBM · pith_short_16: DGEI7H2HGNBMVLOX · pith_short_8: DGEI7H2H

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/DGEI7H2HGNBMVLOXAWM4E5HIBW \
  | 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: 19888f9f473342caadd70599c274e80d84334f37462ce95f4a3a4ed77238816b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7f9a1d7e0c19dc3e69f7123491c883173a0e26eb880a5bca9c8a3f72b02cba29",
    "cross_cats_sorted": [
      "cs.DM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2013-11-22T01:39:41Z",
    "title_canon_sha256": "d96e9de9712f8637d8b2a1586a3395be292d3f4b2811b4885a6d7845204fe23f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1311.5634",
    "kind": "arxiv",
    "version": 1
  }
}