Pith Number

pith:HKSX57CT

pith:2012:HKSX57CTW7PADTDRIDPKTVQMML

not attested not anchored not stored refs pending

On perturbations of almost distance-regular graphs

Cristina Dalf\'o, Edwin R. van Dam, Miquel Angel Fiol

arxiv:1202.3313 v1 · 2012-02-15 · 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{HKSX57CTW7PADTDRIDPKTVQMML}

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	2026-05-18T03:54:16.565096Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3aa57efc53b7de01cc7140dea9d60c62caf10c8907cc5f1e59c11e89bdf06465

Aliases

arxiv: 1202.3313 · arxiv_version: 1202.3313v1 · doi: 10.48550/arxiv.1202.3313 · pith_short_12: HKSX57CTW7PA · pith_short_16: HKSX57CTW7PADTDR · pith_short_8: HKSX57CT

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/HKSX57CTW7PADTDRIDPKTVQMML \
  | 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: 3aa57efc53b7de01cc7140dea9d60c62caf10c8907cc5f1e59c11e89bdf06465

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dcb76faa7486c3ef0b291479f291b945609e62092180c2604b8047a84324b023",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2012-02-15T14:19:47Z",
    "title_canon_sha256": "53e6ceedf829d2a50454ebbf57f88da48d4d216a886dc97dcbdb71c39dfa9fd2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1202.3313",
    "kind": "arxiv",
    "version": 1
  }
}