Pith Number

pith:R4W2UD4A

pith:2014:R4W2UD4AI27TSXFGC5PVSAQKAE

not attested not anchored not stored refs pending

Identifying codes in vertex-transitive graphs and strongly regular graphs

Aline Parreau, Elise Vandomme, Leo Storme, Sara Rottey, Sylvain Gravier

arxiv:1411.5275 v2 · 2014-11-19 · 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{R4W2UD4AI27TSXFGC5PVSAQKAE}

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	2026-05-18T01:11:27.564107Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8f2daa0f8046bf395ca6175f59020a012138796ab0a83f366afe35270a426ea1

Aliases

arxiv: 1411.5275 · arxiv_version: 1411.5275v2 · doi: 10.48550/arxiv.1411.5275 · pith_short_12: R4W2UD4AI27T · pith_short_16: R4W2UD4AI27TSXFG · pith_short_8: R4W2UD4A

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/R4W2UD4AI27TSXFGC5PVSAQKAE \
  | 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: 8f2daa0f8046bf395ca6175f59020a012138796ab0a83f366afe35270a426ea1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "993c32b5e3ec2533b524b304ac7e546f2a5d5a5e1644b5ec38b135e8e371d75d",
    "cross_cats_sorted": [
      "cs.DM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2014-11-19T16:18:46Z",
    "title_canon_sha256": "18cab9360a90a728ae7e4cfa9d4b2dad2d24395c3441ecd7e7a0f4895b4c4233"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1411.5275",
    "kind": "arxiv",
    "version": 2
  }
}