Pith Number

pith:4BU7J4YI

pith:2016:4BU7J4YIZK7QBPUDWCVXTRDB5B

not attested not anchored not stored refs pending

Recognition of unipolar and generalised split graphs

Colin McDiarmid, Nikola Yolov

arxiv:1604.00922 v1 · 2016-04-04 · cs.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4BU7J4YIZK7QBPUDWCVXTRDB5B}

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	2026-05-18T01:17:47.794911Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e069f4f308cabf00be83b0ab79c461e87e2bd5a5d7de4b3895f4b6bd6df21717

Aliases

arxiv: 1604.00922 · arxiv_version: 1604.00922v1 · doi: 10.48550/arxiv.1604.00922 · pith_short_12: 4BU7J4YIZK7Q · pith_short_16: 4BU7J4YIZK7QBPUD · pith_short_8: 4BU7J4YI

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/4BU7J4YIZK7QBPUDWCVXTRDB5B \
  | 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: e069f4f308cabf00be83b0ab79c461e87e2bd5a5d7de4b3895f4b6bd6df21717

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4422703e8c77aacc1b778f3107fb49e559f7217ab1b8afd2d96eed7826e3a401",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2016-04-04T15:55:07Z",
    "title_canon_sha256": "073ca4f19f9fbaeb37efac15f4839edcca9a61309bc064a824c475bac53ff386"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1604.00922",
    "kind": "arxiv",
    "version": 1
  }
}