Pith Number

pith:P5CUWZEH

pith:2014:P5CUWZEHBT6QF7EICDSVE4F6AC

not attested not anchored not stored refs pending

Poset Entropy versus Number of Linear Extensions: the Width-$2$ Case

Samuel Fiorini, Selim Rexhep

arxiv:1402.5024 v2 · 2014-02-20 · 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{P5CUWZEHBT6QF7EICDSVE4F6AC}

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	2026-05-18T02:32:14.188338Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7f454b64870cfd02fc8810e55270be009ead44bffd07f5eb420eacf7457412b2

Aliases

arxiv: 1402.5024 · arxiv_version: 1402.5024v2 · doi: 10.48550/arxiv.1402.5024 · pith_short_12: P5CUWZEHBT6Q · pith_short_16: P5CUWZEHBT6QF7EI · pith_short_8: P5CUWZEH

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/P5CUWZEHBT6QF7EICDSVE4F6AC \
  | 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: 7f454b64870cfd02fc8810e55270be009ead44bffd07f5eb420eacf7457412b2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "18de2d258b56bc6e5ce89b47a7aba407ab3200c4de1f6bc26ccf726895ef9ec1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2014-02-20T15:11:13Z",
    "title_canon_sha256": "53f0583a1c85fb51f4e52a68931cbece4d473d96e6c83f309c6522242f6362c0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1402.5024",
    "kind": "arxiv",
    "version": 2
  }
}