Pith Number

pith:QBFGYLAL

pith:2014:QBFGYLALQTPPPL2ZJRFNLCTIGM

not attested not anchored not stored refs pending

Introduction to the McPherson number, $\Upsilon(G)$ of a simple connected graph

Johan Kok, Susanth C

arxiv:1410.8637 v1 · 2014-10-31 · 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{QBFGYLALQTPPPL2ZJRFNLCTIGM}

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	2026-05-18T02:38:54.045055Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

804a6c2c0b84def7af594c4ad58a6833002b955ec52715fbe5ecceffd2520e26

Aliases

arxiv: 1410.8637 · arxiv_version: 1410.8637v1 · doi: 10.48550/arxiv.1410.8637 · pith_short_12: QBFGYLALQTPP · pith_short_16: QBFGYLALQTPPPL2Z · pith_short_8: QBFGYLAL

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/QBFGYLALQTPPPL2ZJRFNLCTIGM \
  | 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: 804a6c2c0b84def7af594c4ad58a6833002b955ec52715fbe5ecceffd2520e26

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "26c26f037781539c549e666b3c166145fb321fa2684af5c2d496618fb19d959f",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/3.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2014-10-31T04:44:09Z",
    "title_canon_sha256": "2f752b1f0f2109c3c8235847a047ff963b8981a62fe424b1884722fae8d6f136"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1410.8637",
    "kind": "arxiv",
    "version": 1
  }
}