Pith Number

pith:VIO5U3H4

pith:2012:VIO5U3H42RNE4LPIYIUSPRGP5A

not attested not anchored not stored refs pending

Pseudo-distance-regularised graphs are distance-regular or distance-biregular

M. A. Fiol

arxiv:1205.5687 v1 · 2012-05-25 · 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{VIO5U3H42RNE4LPIYIUSPRGP5A}

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	2026-05-18T03:54:50.568218Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

aa1dda6cfcd45a4e2de8c22927c4cfe80eeff90400ad0de5c17dda83710d0b68

Aliases

arxiv: 1205.5687 · arxiv_version: 1205.5687v1 · doi: 10.48550/arxiv.1205.5687 · pith_short_12: VIO5U3H42RNE · pith_short_16: VIO5U3H42RNE4LPI · pith_short_8: VIO5U3H4

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/VIO5U3H42RNE4LPIYIUSPRGP5A \
  | 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: aa1dda6cfcd45a4e2de8c22927c4cfe80eeff90400ad0de5c17dda83710d0b68

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1978f17026206c3e3f640f5752755c794a2d115eeb2070195e26093e46a62615",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2012-05-25T13:04:28Z",
    "title_canon_sha256": "4e46f8ec58005b76d491f2e3e21bd83e438d4c91831610e848fdcc89bbc4399d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1205.5687",
    "kind": "arxiv",
    "version": 1
  }
}