Pith Number

pith:YSLFDF2L

pith:2015:YSLFDF2LOONMTT6HR2QTVQVF6Z

not attested not anchored not stored refs pending

On the choosability of claw-free perfect graphs

Fr\'ed\'eric Maffray, Lucas Pastor, Sylvain Gravier

arxiv:1506.02576 v3 · 2015-06-08 · 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{YSLFDF2LOONMTT6HR2QTVQVF6Z}

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	2026-05-18T01:26:18.276038Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c49651974b739ac9cfc78ea13ac2a5f66ddcb2c5d3c97edc260a95a916574055

Aliases

arxiv: 1506.02576 · arxiv_version: 1506.02576v3 · doi: 10.48550/arxiv.1506.02576 · pith_short_12: YSLFDF2LOONM · pith_short_16: YSLFDF2LOONMTT6H · pith_short_8: YSLFDF2L

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/YSLFDF2LOONMTT6HR2QTVQVF6Z \
  | 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: c49651974b739ac9cfc78ea13ac2a5f66ddcb2c5d3c97edc260a95a916574055

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "45ef6083233ac5a6cfc2ccd4f62772d37952571a1b188d8dde5e5a194432182a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2015-06-08T16:32:05Z",
    "title_canon_sha256": "b01e1fa79bae047c6daa38f7ebf2828835f96c434e8a3626f7ba9e3cca9f01f0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1506.02576",
    "kind": "arxiv",
    "version": 3
  }
}