Pith Number

pith:RXST4ZDL

pith:2012:RXST4ZDLEOJZGGCJ6XSHXA4UIR

not attested not anchored not stored refs pending

A note on probe cographs

Ton Kloks

arxiv:1202.0364 v1 · 2012-02-02 · 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{RXST4ZDLEOJZGGCJ6XSHXA4UIR}

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	2026-05-18T04:03:18.556849Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8de53e646b2393931849f5e47b839444609ad8aab073b33626ea8ac8d713883b

Aliases

arxiv: 1202.0364 · arxiv_version: 1202.0364v1 · doi: 10.48550/arxiv.1202.0364 · pith_short_12: RXST4ZDLEOJZ · pith_short_16: RXST4ZDLEOJZGGCJ · pith_short_8: RXST4ZDL

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/RXST4ZDLEOJZGGCJ6XSHXA4UIR \
  | 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: 8de53e646b2393931849f5e47b839444609ad8aab073b33626ea8ac8d713883b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ca06274697d1e76052c7713fe1c71f7a13e7a33a5cbca3b4aae878d5c738e0b1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2012-02-02T05:24:25Z",
    "title_canon_sha256": "d8355d20c6feea140553431c992760f4012189e06ce896f11bc84d03305b2cf5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1202.0364",
    "kind": "arxiv",
    "version": 1
  }
}